Over twenty years of experience, engineering expertise. and dynamic growth has given PENCOM. as one of the foremost global suppliers to the fastener

Transcription

1 SCREW BOOK

2 Over twenty years of experience, engineering expertise and dynamic growth has given PENCOM the reputation as one of the foremost global suppliers to the fastener industry. PENCOM prides itself on having quality pro- ducts at competitive prices with on-time deliveries. This book is provided as a reference guide only. PENCOM will not be liable to any party for any direct, indirect, special or other consequential damages from the use of this reference material, including, without limitation, any lost profits, business interruption, loss of programs or otherwise, even if we are expressly advised of the possibility of such damages. All information is provided on an as is basis only. We provide no representations or warranties, express or implied, including the implied warranties of fitness for a particular purpose, merchantability and non-infringement. REV Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

3 Machine Screws Type MS Inch p. 21 Metric p. 105 Type F Inch p. 33 Metric p. 113 Type 23 Inch p. 39 Metric p. 117 Type 1 Inch p. 45 Metric p. 121 Type TA Inch p. 51 Metric p. 125 Socket Screws Shoulder Screws Type SOC Inch p. 57 Metric p. 129 Type PS Inch p. 61 Metric p. 133 Sheet Metal Screws Type B Inch p. 65 Metric p. 137 Type AB Inch p. 71 Metric p. 141 Type 25 Inch p. 77 Metric p. 145 Type TEK2 Metric p. 149 Screws for Plastics Type PF Metric p. 153 Type Inch p. 81 Metric p. 157 Type PAST 48/2 Inch p. 85 Metric p. 161 Nuts See Nuts section for all nut styles. Type NU Inch p. 89 Metric p. 165 Washers See Washer Section for all washer styles. Type WA Inch p. 97 Metric p. 173 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

4 Table of Contents Introduction 8 Tolerances 8 Nomenclature 9 Features 9 rives 10 eads 12 s 13 Points - Machine Screw 14 Points - Sheet Metal 14 Attached Washers 15 Integrated ocking Features 15 Socket Screws 16 Shoulder Screws 16 SEMS - ow they are made 17 s 17 When to Use 18 s Per Inch 19 Notes 20 INC Machine Screw Inch 21 Pan ead Machine Screw, Pan ead 22 Machine Screw, Pan ead 22 Flat ead Machine Screw, 82 eg Flat ead 23 Machine Screw, 100 eg Flat ead 23 Machine Screw, 82 eg Trimmed Flat ead 24 Machine Screw, 82 eg Undercut Flat ead 24 ex ead Machine Screw, Indented ex ead 25 Machine Screw, Indented ex Washer ead 25 Machine Screw, Indented ex Washer ead with Serrations 26 SEMS Machine Screw, Internal Tooth ock Washers SEMS 26 Machine Screw, Square ock Cone Washer SEMS 27 Machine Screw, External Tooth ock Washer SEMS 27 Machine Screw, Split ock Washer SEMS 28 Special Use eads Machine Screw, Binder ead 28 Machine Screw, Button ead 29 Machine Screw, Fillister ead 29 Machine Screw, Oval ead 30 Machine Screw, Oval ead 30 Machine Screw, Trimmed Oval ead 31 Machine Screw, Undercut Oval ead 31 Machine Screw, Truss ead 32 Machine Screw, Cutting Inch - Type F 33 Pan ead Machine Screw, Pan ead 34 Machine Screw, Pan ead 34 Flat ead Machine Screw, 82 eg Flat ead 35 Machine Screw, 82 eg Undercut Flat ead 35 ex ead Machine Screw, Indented ex ead 36 Machine Screw, Indented ex Washer ead 36 Special Use eads Machine Screw, Oval ead 37 Machine Screw, Undercut Oval ead 37 Machine Screw, Truss ead 38 Machine Screw, Cutting Inch Type Pan ead Machine Screw, Pan ead 40 Machine Screw, Pan ead 40 Flat ead Machine Screw, 82 eg Flat ead 41 Machine Screw, 82 eg Undercut Flat ead 41 ex ead Machine Screw, Indented ex ead 42 Machine Screw, Indented ex Washer ead 42 Special Use eads Machine Screw, Oval ead 43 Machine Screw, Undercut Oval ead 43 Machine Screw, Truss ead 44 Machine Screw, Cutting Inch - Type 1 45 Pan ead Machine Screw, Pan ead 46 Machine Screw, Pan ead 46 Flat ead Machine Screw, 82 eg Flat ead 47 Machine Screw, 82 eg Undercut Flat ead 47 ex ead Machine Screw, Indented ex ead 48 Machine Screw, Indented ex Washer ead 48 Special Use eads Machine Screw, Oval ead 49 Machine Screw, Undercut Oval ead 49 Machine Screw, Truss ead 50 Machine Screw, Forming Inch - Type TA 51 Pan ead Machine Screw, Pan ead 52 Machine Screw, Pan ead 52 Flat ead Machine Screw, 82 eg Flat ead 53 Machine Screw, 82 eg Undercut Flat ead 53 ex ead Machine Screw, Indented ex ead 54 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

5 Table of Contents Machine Screw, Indented ex Washer ead 54 Special Use eads Machine Screw, Oval ead 55 Machine Screw, Undercut Oval ead 55 Machine Screw, Truss ead 56 Socket Screws Inch - Type SOC 57 Socket Screws Socket ead Cap Screw 58 Flat Countersunk ead Cap Screw 58 Button ead Cap Screw 59 Notes 60 Precision Shoulder Screws Inch - Type PS 61 Precision Shoulder Screws Precision ead Shoulder Screw 62 Precision Socket ead Shoulder Screw 63 Precision ead Shoulder Screw 64 Sheet Metal Screws, Forming Inch - Type B 65 Pan ead Sheet Metal Screw, Pan ead 66 Sheet Metal Screw, Pan ead 66 Flat ead Sheet Metal Screw, 82 eg Flat ead 67 Sheet Metal Screw, 82 eg Undercut Flat ead 67 Sheet Metal Screw, 100 eg Flat ead 68 ex ead Sheet Metal Screw, Indented ex ead 68 Sheet Metal Screw, Indented ex Washer ead 69 Special Use eads Sheet Metal Screw, Oval ead 69 Sheet Metal Screw, Truss ead 70 Sheet Metal Screws, Forming Inch - Type AB 71 Pan ead Sheet Metal Screw, Pan ead 72 Sheet Metal Screw, Pan ead 72 Flat ead Sheet Metal Screw, 82 eg Flat ead 73 Sheet Metal Screw, 82 eg Undercut Flat ead 73 ex ead Sheet Metal Screw, Indented ex ead 74 Sheet Metal Screw, Indented ex Washer ead 74 Special Use eads Sheet Metal Screw, Oval ead 75 Sheet Metal Screw, Undercut Oval ead 75 Sheet Metal Screw, Truss ead 76 Sheet Metal Screws, Cutting Inch - Type Pan ead Sheet Metal Screw, Pan ead 78 Sheet Metal Screw, Pan ead 78 Flat ead Sheet Metal Screw, 82 eg Flat ead 79 Sheet Metal Screw, 82 eg Undercut Flat ead 79 ex ead Sheet Metal Screw, Indented ex Washer ead 80 Screws for Plastic, Forming Inch - Type 81 Pan ead Screws For Plastic, Pan ead 82 Screws For Plastic, Pan ead 82 Flat ead Screws For Plastic, 82 eg Flat ead 83 Screws For Plastic, 82 eg Undercut Flat ead 83 ex ead Screws For Plastic, Indented ex Washer ead 84 Screws for Plastic, Forming Inch - Type PAST 48/2 85 Pan ead Screws For Plastic, Pan ead 86 Screws For Plastic, Pan ead 86 Flat ead Screws For Plastic, 82 eg Flat ead 87 Screws For Plastic, 82 eg Undercut Flat ead 87 ex ead Screws For Plastic, Indented ex Washer ead 88 Special Use eads Screws For Plastic, Truss ead 88 Nuts Inch 89 Nuts ex Nut 90 ex Jam Nut 90 Machine Screw Nut 91 Machine Screw Nut, Small Pattern 91 ex KPS Nut 92 Conical KPS Nut 92 ex Flange Nut 93 Serrated Flange ocknut 93 Flange Side ocknut 94 Flange Top ocknut 94 Cap Nut 95 Nylon Insert ocknut 95 Nylon Insert ocknut, Thin Pattern 96 Panel Nut 96 Washers Inch 97 Washers ock Washer, External Tooth 98 ock Washer, Internal Tooth 99 ock Washer, Internal External Tooth 100 Plain Washer 101 Plain Washer - Regular, Narrow, Wide 102 ock Washer, Split ock Washer 103 Notes 104 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

6 Table of Contents Metric Machine Screw Metric 105 Pan ead Machine Screw, Pan ead 106 Machine Screw, Pan ead 106 Flat ead Machine Screw, 90 eg Flat ead 107 ex ead Machine Screw, Indented ex ead 107 Machine Screw, Indented ex Washer ead 108 SEMS Machine Screw, Internal Tooth ock Washers SEMS 108 Machine Screw, Square Cone ock Washer SEMS 109 Machine Screw, External Tooth ock Washer SEMS 109 Machine Screw, Split Ring ock Washer SEMS 110 Special Use eads Machine Screw, Button ead 110 Machine Screw, Oval ead 111 Machine Screw, Oval ead 111 Notes 112 Machine Screw, Cutting Metric - Type F 113 Pan ead Machine Screw, Pan ead 114 Machine Screw, Pan ead 114 Flat ead Machine Screw, 90 eg Flat ead 115 ex ead Machine Screw, Indented ex ead 115 Machine Screw, Indented ex Washer ead 116 Special Use eads Machine Screw, Oval ead 116 Machine Screw, Cutting Metric - Type Pan ead Machine Screw, Pan ead 118 Machine Screw, Pan ead 118 Flat ead Machine Screw, 90 eg Flat ead 119 ex ead Machine Screw, Indented ex ead 119 Machine Screw, Indented ex Washer ead 120 Special Use eads Machine Screw, Oval ead 120 Machine Screw, Cutting Metric - Type Pan ead Machine Screw, Pan ead 122 Machine Screw, Pan ead 122 Flat ead Machine Screw, 90 eg Flat ead 123 ex ead Machine Screw, Indented ex ead 123 Machine Screw, Indented ex Washer ead 124 Special Use eads Machine Screw, Oval ead 124 Machine Screw, Forming Metric - Type TA 125 Pan ead Machine Screw, Pan ead 126 Machine Screw, Pan ead 126 Flat ead Machine Screw, 90 eg Flat ead 127 ex ead Machine Screw, Indented ex ead 127 Machine Screw, Indented ex Washer ead 128 Special Use eads Machine Screw, Oval ead 128 Socket Screws Metric - Type SOC 129 Shoulder Screws Socket ead Cap Screw 130 Flat Countersunk ead Cap Screw 130 Button ead Cap Screw 131 Notes 132 Precision Socket Screws Metric - Type PS 133 Precision Shoulder Screws Precision Shoulder Screw ead 134 Precision Shoulder Screw Socket ead 135 Precision Shoulder Screw ead 136 Sheet Metal Screws, Forming Metric - Type B 137 Pan ead Sheet Metal Screw, Pan ead 138 Sheet Metal Screw, Pan ead 138 Flat ead Sheet Metal Screw, 90 eg Flat ead 139 ex ead Sheet Metal Screw, Indented ex ead 139 Sheet Metal Screw, Indented ex Washer ead 140 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

7 Table of Contents Special Use eads Sheet Metal Screw, Oval ead 140 Sheet Metal Screws, Forming Metric - Type AB 141 Pan ead Sheet Metal Screw, Pan ead 142 Sheet Metal Screw, Pan ead 142 Flat ead Sheet Metal Screw, 90 eg Flat ead 143 ex ead Sheet Metal Screw, Indented ex ead 143 Sheet Metal Screw, Indented ex Washer ead 144 Special Use eads Sheet Metal Screw, Oval ead 144 Sheet Metal Screws, Cutting Metric - Type Pan ead Sheet Metal Screw, Pan ead 146 Sheet Metal Screw, Pan ead 146 Flat ead Sheet Metal Screw, 90 eg Flat ead 147 ex ead Sheet Metal Screw, Indented ex Washer ead 147 Notes 148 Sheet Metal Screws, Self rilling Metric - Type TEK2 149 Pan ead Sheet Metal Screw, Pan ead 150 Flat ead Sheet Metal Screw, 90 eg Flat ead 150 ex ead Sheet Metal Screw, Indented ex Washer ead 151 Notes 152 Screws for Plastic, Forming Metric - Type PF 153 Pan ead Screws For Plastic, Pan ead 154 Flat ead Screws For Plastic, 90 eg Flat ead 154 ex ead Screws For Plastic, Indented ex ead 155 Screws For Plastic, Indented ex Washer ead 155 Screws for Plastic, Forming Metric - Type 157 Pan ead Screws For Plastic, Pan ead 158 Screws For Plastic, Pan ead 158 Flat ead Screws For Plastic, 90 eg Flat ead 159 ex ead Screws For Plastic, Indented Washer ex ead 159 Notes 160 Screws for Plastic, Forming Metric - Type PAST 48/2 161 Pan ead Screws For Plastic, Pan ead 162 Screws For Plastic, Pan ead 162 Flat ead Screws For Plastic, 90 eg Flat ead 163 ex ead Screws For Plastic, Indented ex Washer ead 163 Notes 164 Nuts Metric 165 Nuts ex Nut - Style ex Nut - Style ex Jam Nut 167 KPS Nut 167 Conical Washer KPS Nut 168 ex Flange Nut 168 Prevailing -Torque Finished ex Nut 169 Prevailing-Torque Flange Nut 169 Cap Nut 170 Cage Nut 171 Jam Nylon Insert ocknut, eavy Pattern 172 Nylon Insert ocknut, Regular Pattern 172 Washers Metric 173 Washers ock Washer, External Tooth 174 ock Washer, Internal External Tooth 175 ock Washer, Internal Tooth 176 Plain Washer 177 Plain Washer - Product Grade A 178 ock Washer, Split ock Washer 179 Notes 180 Notes 156 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

8 Introduction Flank Angle The most popular thread used in fastening is the machine screw thread (Figure 1). The machine screw thread has a 60 degree thread angle made in a continual running helix pattern. All fastener threads have five defining dimensions, they are the major diameter, minor diameter, pitch diameter, flank angle, and pitch. Pitch iameter Figure 1 Pitch iameter Pitch Pitch Major iameter Minor iameter Major iameter Minor iameter Feature Major iameter Minor iameter Pitch iameter Flank Angle Pitch Male This is the diameter across the crest of the thread. It is easily checked with calipers. This is the diameter across the root of the thread. The easiest way to check this dimension is with an optical comparator. This is the mid point between the crest and root of the thread. It is checked by using a pitch micrometer. This is the angle made by the intersection of the two thread flanks. It is best checked with an optical comparator. This is the distance between two consecutive thread crests. It is best checked with an optical comparator. Female This is the diameter across the root of a female thread. This diameter is very hard to measure and is best checked by a thread gage. This is the diameter of the through hole of the female thread. It can be easily checked with a pin gauge. This is the mid point between the crest and root of the thread. It is checked with the use of a thread gauge. This is the angle made by the intersection of the two thread flanks. It is best checked with a thread gauge. This is the distance between two consecutive thread crests. It s best checked with a thread gauge. Tolerances Internal arger Major iameter A fastener with a machine screw thread can have one of three classes of thread tolerances. (Figure 2) The tolerance is called Class of Fit. To indicate that a thread is a male thread an A is placed behind the Class of Fit number (for example, 2A). To indicate that a thread is a female thread a B is used, (for example, 3B). Class 1 Is a very loose fit. It is rarely used in today s market place. Class 2 Is the most widely used tolerance class by the fastener industry. All industrial applications use a Class 2 Fit. External Smaller Class 3 Is thought of as the, Aerospace tolerance. This class of fit is used on more critical applications. imensions for all thread sizes and their corresponding class of fit can be found in the ASME B1.1 Specification Figure 2 8 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

9 Nomenclature The fastener industry has developed a very strong nomenclature to identify a thread. ere is how to call out a fastener thread UNC 2A Size s per Inch Shape of Unified National Coarse UNC Unified National Fine UNF Tolerance of Fit 2 - Commercial Standard 3 - Aerospace Standard Style of A - Male B - Female Thead Figure 3 Machine Screw s A machine screw thread is defined by starting with the size of the thread, then the number of threads in one inch, followed by the thread form call out, UN for Unified National then the letter C for coarse, F for fine, the Class of Fit, and an A for an external thread or B for an internal thread (Figure 3). In this guidebook, the thread nomenclature has been shortened to use only the thread size and threads per inch. A Class 2 tolerance is assumed, and the internal / external thread profile can be determined from the rest of the description. Sheet Metal Screw s In sheet metal screw threads there is no Class of Fit. The nomenclature used calls out the size and the type of thread (for example, #6 Type B). See s on page 9 to see all the various sheet metal threads. Features A screw can be broken down into various components (Figure 4). These components have been dimensionally detailed by ANSI standards. A complete set of fastener standards can be found in the Industrial Fasteners Institute (IFI) Fasteners Standards book. rive ead Point Figure 4 In addition to the nomenclature used to describe a thread, there is also a standard terminology to define the rest of a fastener. This is accomplished by describing the features of a fastener. Other features can also be added to a screw (Figure 5). The various combinations of each of these components can produce an endless number of possible screw options. This guide will try to detail many of these options and what their unique values are. Terminology used to call out a fastener: 4 40 x 5/16 P-PN-MS-ST Phillips pan head machine screw steel zinc. Attached Washer Anti Vibration Element Figure NY-IN-K-NU nylon insert locknut stainless steel 9 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

10 rives P Type 1 is the most popular drive found in small diameter screws. It is often referred to as a Phillips drive after the firm that developed it many years ago. Tools are readily available to install this screw. Its ability to keep the screwdriver bit in place is good and it transfers torque to the screw well. The Type 1 cross recess can be found in almost all applications and offers the best off the shelf availability. S - P Combination rive was developed to get the production benefits of the Type 1. It has good drive to bit engagement and thus good torque transfer to the screw. This drive is often used when there is product assembly done by the consumer. Either a standard Phillips bit or a slotted bit can be used for assembly. S rive is the oldest of screw drives dating back to the industrial revolution. It is still very popular where home applications are involved. Tools are readily available almost anywhere. If a slotted screwdriver is not available, other items (knife or coin) have been known to stand-in. The slotted drive offers a poor ability to hold the driver bit in the drive, preventing the full transfer of torque to the screw. S - TX 6 obe Recess was developed to make the 6 lobe more convenient to the end user. This drive still offers all the high-speed assembly benefits of the 6 lobe recess to the manufacture. It also allows the end user to disassemble the screw with a slotted driver. This style recess has become very popular where customer disassembly is required. Many high tech consumer products have made this their standard (computers, prints, disc drives, etc.) TX 6 obe Recess was developed by Camcar in the 1970 s to address the limitations of the popular drives of the time. They called this drive the Torx. The 6 lobe recess offers excellent drive to Screwdriver bit engagement. The bit nests into the drive in a way that, during use, all torsional forces are transferred to the screw. This allows for maximum loading of the fastener. As driver bits have become more popular, the 6 lobe recess has worked its way into more consumer products. It is very popular for high volume assemblies. SQ Square rive has become popular in the construction industry. The drive to bit engagement is excellent, and the torque transfer to the screw is also very good. Square drive bits are readily available from construction supply stores, but are more difficult to obtain for consumers. This produces a mildly tamper resistant condition with the screw. XTX Tamperproof 6 obe Recess allows a high volume manufacture to get some level of tamper resistance into their product. This is often used on disc drives and other computer products to convey the message that the general consumer is not welcomed. All the benefits of the 6 lobe recess are still in force. river bits are difficult to get if not in the trade. X ex Recess is used primarily on socket products. The points on the hex bit produces a high-pressure point against the contact location of the hex recess during assembly. This produces a higher drive bit wear then a 6 lobe recess. To protect the hex recess, all steel screws are heat-treated. Recess to screwdriver bit engagement is excellent. Torque transfer from the bit to screw is excellent. river bits have excessive wear. Typical applications are high-end instrumentation, medical and test equipment. P Pozi rive was also developed as an improvement on the Phillips drive. Officially called a Type 1A cross recess, the design produces more grain flow in the drive area. This is designed to increase the toughness of the drive and reduce the stripping problem inherent with the Phillips drive. Though not very popular in the USA, the pozi drive has become very popular in Europe. rive to bit engagement is slightly better that a Phillips. Transfer of torque from the screwdriver to the screw is good. rive bit availability in the USA is poor. XX Tamperproof ex Recess is a way to make a standard hex recess tamper resistant. uring the manufacturing process, a small shaft of material is formed that sticks up from the bottom of the hex recess, this prevents any standard hex bits from engaging the recess. Since most hex bits are hardened, it becomes a difficult task to modify. The driver to bit engagement and the torque transfer is the same as a hex recess. Typical application is when simple tampering needs to be prevented. 10 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

11 rives TPX Torx Plus is a patented drive from the Camcar ivision of Textron. Its design comes from its predecessor, the 6 lobe recess. The benefits of this rive according to Camcar is high drive torques. To date, most application needs can be solved with the 6 obe rive. There is a cost premium when using the Torx Plus. P-SQ Phillips Square esigned to meet the demanding needs of manufacturing engineers. The Phillips Square rive combines the cross recess and the square recess. The result: a highly efficient and functional multi-driver serviceable recess. PAC Anti Cam-out Recess (ACR Phillips II ) has vertical ridges running down into the recess. These ribs engage with horizontal ribs on the driver bit to lock the driver to the screw. The drive was developed to address the inherent stripping problems of the type. It was also designed to take back some of the 6-obe market. There is a cost premium when using the ACR. WY One Way rive falls into the family of tamper resistant drives. It is based on a slotted drive, which has had the back flanks removed. This allows the drive to be installed but not removed. The one-way drive is a very user-friendly drive since a slotted screwdriver is readily available. This drive has become very popular in public areas where field assembly will take place. The process to remove a one way screw is very difficult. SPN Spanner rive has two small holes on the top of the drive. A screwdriver with two male pins is inserted into the mating holes on top of the screw for assembly. The spanner drive can be easily removed with the proper driver bit. The drive to bit engagement is good, but the drive pins can be easily overloaded, so the torque transfer is low. This drive has become very popular in public areas where tamper resistance and field repair are required. TW Tri Wing was developed as a drive for the aerospace industry. Its design puts more of the installation force vector onto a larger drive flank. It enables the drive bit to transfer more torque into screw load. owever, what is gained in installation is lost in removal. The tri wing has also been used as a tamper resistant drive. 11 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

12 eads PN Pan ead is the general purpose head used by all industries. It has a good bearing area to spread load into the mating part. FI Fillister ead has a smaller outside diameter than the pan head. It is excellent for use in a counter bored hole. The higher head allows for a deeper drive. The bearing area is small and damage around the mating hole is possible. Flat ead is the general purpose head that is used when a flush condition is required. The standard flat head has an 82º head. (90º head for metric screws) Oval ead is used to add a finished look to the surface of a product. The head angle is 82º. F OVA 100G 100 egree Flat ead is used in thin materials like those found in the aerospace industry. UOVA Undercut Oval ead is used to add a finished look to the surface of a product when the materials will not allow a standard oval head. The head angle is 82º. UF Undercut Flat ead is used in thin materials where the deep shape of the standard flat head is undesirable. The head angle is 82º. TRIM - OVA Trimmed Oval ead is similar to the oval head machine screw except that the size of head for a given size screw is one or two sizes smaller than the oval standard sizes. The head angle is 82º. Trimmed Flat ead has a smaller diameter head than the standard flat head. It is used when a smaller diameter head is needed. The head angle is 82º. Truss ead is lower in height and has a larger bearing area than the pan head. Truss head screws offer a pleasing look on the surface of a product. F-TRIM TRU INX - WA Indented ex Washer ead offers excellent torque transfer into the screw when driven from the hex body. The washer increases the bearing area of the screw. C Cheese ead is a specialized head that is used by design engineers for its particular look. Indented ex ead has excellent torque to load transfer. In most cases a design engineer will choose the Indented hex washer head instead. Socket ead Cap Screw is the standard for all of the high strength hex recess driven screws. INX CAP BIN Binder ead is a specialized style that is chosen for its look by design engineers. ER Wafer ead is a low profile head style that has a very low height. It does not require a countersink in the mating material. Button ead is used for producing a hi-tech look on a product, generally mated with either a hex or a torx recess. Round Washer ead is popular in the auto industry. Excellent bearing area. BUT Round ead is one of the oldest head styles. It has generally been replaced by the Pan head. 12 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

13 s Machine Screw Styles MS Machine Screw threads are the most common of all thread profiles. It has a 60 degree flank angle. 1 Type 1 is a thread cutting screw with a machine screw thread pitch, blunt point, tapered entering threads and a single cutting edge. C Type C threads are machine screw threads with a tapered point that will form a thread. 23 Type 23 threads are machine screw threads that have a milled section removed from the shaft. This larger space is helpful when there is paint or other materials that could build up during the cutting process. TA Trilobular threads are machine screw threads with a thread forming feature. Trilobular screws will form their own threads in the mating materials. They will form threads in all soft ductile metals (Aluminum, ow Carbon Steel, Brass, and Copper). F Type F threads are machine screw threads that have two grooves for cutting a thread into the mating material. This thread style has been replaced by the better performing TA style. Sheet Metal Screw Styles A Type A sheet metal screws have a 60 degree flank angle and a space between the threads. The Type A is still available but most applications have been switched to the more available Type AB and Type B. 25 Type 25 sheet metal screws have a Type B thread shaft with a blunt point. A milled groove is added to the thread making it a thread cutting version of the Type B. AB Type AB threads are standard sheet metal screw threads. They have a 60 degree flank angle thread and can form a thread in soft materials. The Type AB has the same point as the Type A. TEK2 Type TK sheet metal screws have the same thread as a Type B with a drill feature for a point. Type TK screws are very popular in applications where a screw must drill a hole in the part. B Type B sheet metal screws have the same thread as the Type AB. The end of the screw is blunt, offering more thread engagement in short length applications. The Type B is the most popular thread in the sheet metal family. s for Plastic Application PF Type PF is a thread designed to be used in soft materials. It has a 30 degree flank angle thread that slices through the plastic without inducing high stress levels. It has the smallest minor diameter of the screws for plastics, and offers the highest pull performance. PAST 48/2 Type PAST 48/2 is a trilobular thread for plastics. It has a 48 degree flank angle that produces less stress on a plastic boss than a 60 degree thread. The minor diameter is also smaller than that of the Type B which gives it a better pull out. Type is a thread forming screw with a doublelead, consisting of a high and low thread. The lower thread varies in height from 1/3 to 1/2 that of the higher thread, which is sharper and flatter than a standard thread. Type thread is for use in plastic, nylon or other low-density materials. PAST 60/1 Type PAST 60/1 is a trilobular thread rolling screw designed for high performance fastening in a wide range of thermoplastics. The 60 eg profile on the type 60/1 screw penetrates deeply into the work piece, absorbing higher torques without stripping and resisting pullout forces. 13 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

14 Points - Machine Screw Cut-off Point is the standard shape when a screw is processed without any special attention. The Cut-off point produces a very abrupt transition between the point and the thread. eader Point is produced during the forming operation. There is a small chamfer that is added to the screw blank. When the thread is added to the screw blank. This small chamfer produces a smooth transition between the point and the thread. og Point is the unthreaded minor diameter shank of a screw. It is helpful for the alignment into hard to see holes. ere it is used with a machine screw thread. Points - Sheet Metal BP Point is a cone point on a Type B thread. It enables the screw to locate and then pry or force its way into holes that are not aligned. Generally when this feature is needed the designer will opt for the more readily available Type AB. og Point is the unthreaded minor diameter shank of a screw. It is helpful for the alignment into a hard to see hole. ere it is used with a Type B thread. Needle Point is a sharp long point that allows the thread to extrude a female thread in the mating material. 14 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

15 Attached Washers INT - SEMS Internal Tooth ock Washer SEMS is used when it is desirable to have the locking teeth near the mounting hole. They are also popular when there is high volume assembly. The teeth do not come in contact with the assembler s fingers as is the case of the external tooth washer. SPT - SEMS Split Ring ock Washer SEMS is a very popular locking device. owever, a quick review of the tension provided by the split ring will show that it is a very small percent of the total load on a fastener. Its true benefit is that it provides a hardened bearing surface for the fastener to load against. This improves the torque / tension curve and provides the best joint loading. SQCN - SEMS Square Cone ock Washer SEMS is designed to provide an additional spring component in the fastened joint. As the joint flexes, the square cone washer SEMS is able to respond and keep the joint in tension. The square cone washer SEMS also has a bearing surface that is not part of the typical conical spring washer. F - SEMS Flat Washer SEMS is a great way to eliminate the need to handle two components. Any size and shape washer can be assembled on to a screw. The flat washer will increase the bearing area of the screw. EXT - SEMS External Tooth ock Washer SEMS takes the standard external tooth lock washer SEMS and permanently attaches it to the screw. This eliminates the need to handle two parts. This is a good locking device, but it s real strength is in the ability of the teeth to dig into surfaces. This is very effective in sizes up to #8. Sizes above a #8, the load gets high enough to flatten the teeth and render them useless. Integrated ocking Features When fasteners are used in a vibration environment, there are many solutions that can be used to keep the assembly tight. ocking features can be added to the fastener to improve its resistance to vibration. Patch ock process make threaded fasteners of all sizes and configurations self-locking and self-sealing. Patch lock can be used with both male and female threads and leaves fasteners fully adjustable. Patch ock is completely dry, fused to the fastener, and requires no curing time after installation. Strip ock is a tough bar of Nylon automatically inserted into a milled slot in a threaded fastener. The result is a fastener that is self-locking, selfsealing, and fully adjustable. Strip lock performs well in both high and low temperature extremes. Epoxy ock is a powerful locking / sealing fastener thread adhesive that is pre-applied to either male or female threaded fasteners. Though the adhesive surface is dry to the touch, the forces of engagement crush the surface skin, mix the separate epoxy components, and initiate a chemical reaction that fixtures in minutes. Curing continues after installation for 72 hours. Serrated Teeth have integrated formed teeth on there bearing surfaces which are shaped and directed to bite into the surface of the member being joined when tightened. This biting mechanism creates a ratchet-type resistance to loosening without the sloppiness or variation of a multi-piece bolted joint. Pellet ock is a special, tough nylon plug, inserted into a drilled hole, which makes any threaded fastener self-locking and self-sealing, while leaving it fully adjustable. In addition to nylon, KE-F and Vespel3 are available for extremely high temperature applications. 15 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

16 Socket Screws Socket screws can be placed into a sub group of all machine screws. They have a machine screw thread, but this is where the similarity stops. Socket screws are made primarily in two materials, steel and stainless steel. The steel socket screws are made from an alloy steel and are heat treated to high tensile strengths. The stainless steel socket screws are generally made from 302 or 304 and are not heat treated. Socket screws are also made from 17-7 Stainless Steel when a heat treated part is required, these are expensive and should be avoided if possible. Socket ead Cap Screw is the most popular in the series and can be found in stock in a full range of sizes ( #2 thru 1 ). Generally supplied in a black finish, they can also be zinc plated. Tensile strength 180,000psi ( steel ), 80, ,000psi ( Stainless Steel ). Strength will vary slightly depending on size. Flat ead Cap Screw is used when a flush assembly is required. The socket head style is chosen over the standard phillips or slotted drive when a higher tech look is desired. Tensile strength 137, ,000psi ( steel ), 80, ,000psi ( Stainless Steel ). Strength will vary slightly depending on size. Button ead Cap Screw has become the screw of chose on small electronic devices. It offers a low profile look and high performance strength. Tensile strength 137, ,000psi ( steel ), 80, ,000psi ( Stainless Steel ). Strength will vary slightly depending on size. Shoulder Screws PENCOM offers two styles of shoulder screws. One is a Socket ead Shoulder Screw (cold headed) and the other is a precision shoulder screw (screw machined). Socket ead Shoulder Screw has a +/ tolerance shoulder diameter starting at ¼ thru 2. The tolerance on the shoulder length is +/ All Socket Shoulder Screws have a hex recess for a drive. The parts are made from alloy steel, are through hardened to Rc 32 43, and are similar to a grade 8 fastener. Shoulder screws are generally supplied in a black condition and then the shoulder is ground to a silver appearance. Socket ead Precision Shoulder Screw has a / tolerance shoulder diameter starting at 1/8 thru 1/2. The tolerance on the shoulder length is / Precision shoulder screws are made in three materials, Brass, 303 Stainless Steel, and 1214 Steel case hardened. Their strength level is similar to a grade 2 fastener. Phillips, slotted, and hex socket drives are available. 16 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

17 SEMS - ow they are made A screw blank is made, looking exactly like a finished screw without the threads. The shaft of the screw blank is at the pitch diameter. The pitch diameter is midway between the minor diameter and the major diameter. A washer is manufactured with an inner diameter that is slightly larger that the pitch diameter of the screw blank, but smaller than the major diameter of the finished screw. The washer is assembled on to the screw blank. The threads are then made in a process called thread rolling. This operation forces the material into the minor diameter and forces material up to create the major diameter. The diameter of the thread is larger than the washer s inner diameter. Once finished, the washer will never be able to be removed again. s Fasteners are made from many materials but most design applications can be handled with either carbon or stainless steel. The common carbon steel grades used for fasteners are AISI 1010 through The common stainless steel grades are 303 and 304. They are part of the 18-8 family (18% Chrome, 8% Nickel) (Figure 6). Application Strength Corrosion Resistance ow Carbon Steel All ow Must be Plated Medium Carbon Steel Automotive Medium Must be Plated Alloy Steel Critical Joints, Socket ead Products igh Fair Titanium Aerospace igh Excellent Monel Marine igh Excellent Incoel igh Temperature igh Excellent Brass Marine / Cosmetic ow Good Stainless Steel 300 Series All Medium Excellent Stainless Steel 400 Series Cutting / Forming Medium / igh Good Aluminum ight Weight ow Excellent Phosphorus Bronze Electrical Medium Good Nylon Chemical Very ow Excellent Ultem Chemical ow Excellent Copper Electrical ow Good Figure 6 17 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

18 When to Use Machine Screw Sheet Metal Screw Machine Screw Max. Thickness for a Sheet Metal Screw 70% of Major iameter Both 50% of Major iameter Min. Thickness for Machine Screw Sheet Metal Screw Min. Thickness for a Sheet Metal Screw /4 SCREW SIE Screw Size #2 #4 #6 #8 #10 #12 #14 Sheet Metal Screw Max. Thickness Machine Screw MIN Thickness Sheet Metal Screw MIN Thickness Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

19 s Per Inch The importance of thread ramp angle is the fewer number of threads, the higher the ramp angle of the thread. As a screw is tightened, a load (Force) is applied to the flanks of the threads. This load is held in place by the friction between the two threads, the friction between the bearing surface of the screw and the mating material. The higher the ramp angle of the thread, the easier it is for the load to slide down the thread O OA Ramp angle for a 6-20 Type B Sheet Metal 4.13 O OA Ramp angle for a 6-32 Machine Screw s Per Inch Machine Screw s Sheet Metal Screws Fine Coarse A B, AB, BP, BF, 25 Type P482 Type / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

20 Notes 20 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

21 Machine Screws Inch Pan ead Machine Screw, Pan ead 22 Machine Screw, Pan ead 22 Flat ead Machine Screw, 82 eg Flat ead 23 Machine Screw, 100 eg Flat ead 23 Machine Screw, 82 eg Trimmed Flat ead 24 Machine Screw, 82 eg Undercut Flat ead 24 ex ead Machine Screw, Indented ex ead 25 Machine Screw, Indented ex Washer ead 25 Machine Screw, Indented ex Washer ead with Serrations 26 SEMS Machine Screw, Internal Tooth ock Washers SEMS 26 Machine Screw, Square Cone Washer SEMS 27 Machine Screw, External Tooth ock Washer SEMS 27 Machine Screw, Split ock Washer SEMS 28 Special Use eads Machine Screw, Binder ead 28 Machine Screw, Button ead 29 Machine Screw, Fillister ead 29 Machine Screw, Oval ead 30 Machine Screw, Oval ead 30 Machine Screw, Trimmed Oval ead 31 Machine Screw, Undercut Oval ead 31 Machine Screw, Truss ead 32 Pan ead Page 22 Indented ex Washer ead Page 25 Button ead Page 29 Pan ead Page 22 Indented ex Washer ead with Serrations Page 26 Fillister ead Page eg Flat ead Page 23 Internal Tooth ock Washer SEMS Page 26 Oval ead Page eg Flat ead Page 23 Square Cone Washer SEMS Page 27 Oval ead Page eg Trimmed Flat ead Page 24 External Tooth ock Washer SEMS Page 27 Trimmed Oval ead Page eg Undercut Flat ead Page 24 Split ock Washer SEMS Page 28 Undercut Oval ead Page 31 Indented ex ead Page 25 Binder ead Page 28 Truss ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

22 Machine Screw Pan ead Inch 6-32 x 1/2 P - PN - MS - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / T / / T / / T / / T / / T25 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 Finish - BK inc Black 1/ / / T30 1/2.500 / /.470 rive 9/ / /.533 P 5/8.625 / /.595 S - P - 3/4.750 / /.720 TX 6 obe 7/8.875 / /.845 S - TX obe / / / / / / / / / / / / / / / / / / / / / / Machine Screw Pan ead Inch s 4-40 x 1/2 S - PN - MS - ST - ength rive Series Finish eight ead iameter / / / / / / / / / /.357 1/ / /.473 ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black rive S 22 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

23 Machine Screw 82 eg Flat ead Inch 2-56 x 1/2 P - F - MS - ST - ength rive Series Finish 82 EG s eight REF ead iameter Cross Recess rive Size / T8 6 - obe / T / T / T / T25 ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black 1/ / T30 1/2.500 / /.470 rive 9/ / /.533 P 5/8.625 / /.595 S 3/4.750 / /.720 TX 6 obe 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / * P Pozi Same size for POI rive Machine Screw 100 eg Flat ead Inch 8-32 x 1/2 P - 100G - MS - ST - ength rive Series Finish 100 EG s eight REF ead iameter Cross Recess rive Size 6 - obe ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / T / T /.m T / T / T20 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 Finish - BK inc Black 1/ / T27 1/2.500 / /.470 rive 9/ / /.533 P 5/8.625 / /.595 S 3/4.750 / /.720 TX 6 - obe 7/8.875 / /.845 P Pozi / / / / / / / / / / / / / / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

24 Machine Screw 82 eg Trimmed Flat ead Inch 4-40 x 1/2 P - TRIM2 - MS - ST - ength rive Series Finish 82 EG s ead Size eight REF ead iameter rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 Finish - BK inc Black / /2.500 / /.470 rive 1/ / / / /.533 P 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Machine Screw 82 eg Undercut Flat ead Inch s 4-40 x 1/2 P - UF - MS - ST - ength rive Series Finish 82 EG eight ead iameter rive Size / / / / / / / / / / ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black 1/ / / /2.500 / /.470 rive 9/ / /.533 P 5/8.625 / /.595 S 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

25 Machine Screw Indented ex ead Inch s 6-32 x 1/2 P - INX - MS - ST - ength Series Finish eight Width Across Flats rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P S US Unslotted Machine Screw Indented ex Washer ead Inch W s 4-40 x 1/2 P - INX - MS - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size / / / / / / / / / / / / / / / / / / / / / / / / / ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black rive P S US Unslotted / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

26 Machine Screw Indented ex Washer ead with Serration Inch W s 4-40 x 1/2 P - INX - SERR - WA - MS - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / / / / / / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish BK inc Black rive P S US Unslotted Machine Screw Internal Tooth ock Washer SEMS Inch W s 4-40 x 1/4 P - PN - INT - SEMS - MS - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness Cross Recess rive Size / / / T7 6 - obe / / / T / / / T / / / T / / / T25 1/ / / / T30 ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black rive P S - P TX 6 - obe S - TX obe 26 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

27 Machine Screw Square Cone ock Washer SEMS Inch W s 6-32 x 1/2 P - PN - SQCN - SEMS - MS - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness Cross Recess rive Size 6 - obe ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / T / / / T / / / T / / / T25 1/ / / / T30 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P S - P - TX 6 - obe S - TX obe Machine Screw External Tooth ock Washer SEMS Inch W s 6-32 x 1/2 P - PN - EXT - SEMS - MS - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness Cross Recess rive Size / / / T7 6 - obe / / / T / / / T / / / T / / / T25 1/ / / / T30 ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black rive P S - P - TX 6 - obe S - TX obe 27 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

28 Machine Screw Split ock Washer SEMS Inch W s 2-56 x 1/2 P - PN - SPT - K - SEMS - MS - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 Finish - BK inc Black 1/ / / / /2.500 / /.470 rive 9/ / /.533 P 5/8.625 / /.595 S 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Machine Screw Binder ead Inch s 2-56 x 1/2 S - BIN - MS - ST - ength rive Series Finish eight ead iameter rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P S 28 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

29 Machine Screw Button ead Inch 6-32 x 1/2 TX - BUT - MS - ST - ength rive Series Finish s eight ead iameter rive Size 6 - obe ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / /.154 T / /.201 T / /.250 T / /.298 T / /.347 T25 1/ / /.419 T27 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive TX 6 - obe S - TX obe Machine Screw Fillister ead Inch 6-32 x 1/2 P - FI - MS - ST - ength rive Series Finish s eight ead iameter rive Size / / / / / / / / / / / / / ength #2 thru #10 1/4 1/8.125 /.105 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / ST ow Carbon Steel 18 8 Stainless Steel Finish - BK inc Black rive P S 29 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

30 Machine Screw Oval ead Inch S s 6-32 x 1/2 P - OVA - MS - ST - ength rive Series Finish 82 EG Total ead eight S ead Side eight REF ead iameter rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P S - P - Machine Screw Oval ead Inch S s 8-32 x 1/2 S - OVA - MS - ST - ength rive Series Finish 82 EG Total ead eight S ead Side eight REF ead iameter ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / /.340 1/ / /.452 3/ /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive S / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

31 Machine Screw Trimmed Oval ead Inch S s 8-32 x 1/2 P - TRIM - OVA - MS - ST - ength rive Series Finish 82 EG ead Size Total ead eight S ead Side eight REF ead iameter rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 Finish - BK inc Black / / /2.500 / /.470 rive 1/ / / / / /.533 P 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Machine Screw Undercut Oval ead Inch S s 6-32 x 1/2 P - UOVA - MS - ST - ength rive Series Finish 82 EG Total ead eight S ead Side eight REF ead iameter rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / / / / / / / / / /.167 1/4.250 / /.220 5/ / /.283 3/8.375 / /.345 7/ / /.408 1/2.500 / /.470 9/ / /.533 5/8.625 / /.595 3/4.750 / /.720 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P 31 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

32 Machine Screw Truss ead Inch 4-40 x 1/2 P - TRU - MS - ST - ength rive Series Finish s eight ead iameter rive Size ength #2 thru #10 1/4 1/8.125 /.105 ST ow Carbon Steel 18 8 Stainless Steel / / / / / / /4.250 / /.220 Finish / / / / / BK inc Black / / /8.375 / / / / / / /.408 1/ / / /2.500 / /.470 rive 9/ / /.533 P 5/8.625 / /.595 S 3/4.750 / /.720 S - P - 7/8.875 / / / / / / / / / / / / / / / / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

33 Machine Screws, Cutting Inch - Type F Pan ead Machine Screw, Pan ead 34 Machine Screw, Pan ead 34 Flat ead Machine Screw, 82 eg Flat ead 35 Machine Screw, 82 eg Undercut Flat ead 35 ex ead Machine Screw, Indented ex ead 36 Machine Screw, Indented ex Washer ead 36 Special Use eads Machine Screw, Oval ead 37 Machine Screw, Undercut Oval ead 37 Machine Screw, Truss ead 38 Pan ead Page 34 Indented ex Washer ead Page 36 Pan ead Page 34 Oval ead Page eg Flat ead Page 35 Undercut Oval ead Page eg Undercut Flat ead Page 35 Truss ead Page 38 Indented ex ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

34 Machine Screw, Cutting Pan ead Inch - Type F 6-32 x 1/2 P - PN - F - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / T / / T / / T / / T / / T25 1/ / / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe Machine Screw, Cutting Pan ead Inch - Type F 4-40 x 1/2 S - PN - F - ST - ength rive Series Finish s eight ead iameter / / / / / / / / / /.357 1/ / /.473 ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive S 34 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

35 Machine Screw, Cutting 82 eg Flat ead Inch - Type F 4-40 x 1/2 P - F - F - ST - ength rive Series Finish 82 EG s eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S Machine Screw, Cutting 82 eg Undercut Flat ead Inch - Type F 4-40 x 1/2 P - UF - F - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size / / / / / / / / / / / / / ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P 35 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

36 Machine Screw, Cutting Indented ex ead Inch - Type F 4-40 x 1/2 P - INX - F - ST - ength rive Series Finish s eight Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 Finish - BK inc Black 1/ / / /8.625 /.595 rive 3/4.750 /.720 P 7/8.875 /.845 S /.970 US Unslotted / / / / Machine Screw, Cutting Indented ex Washer ead Inch - Type F 4-40 x 1/2 P - INX - WA - F - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size / / / / / / / / / / / / / / / / / / / / / / / / / ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted 36 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

37 Machine Screw, Cutting Oval ead Inch - Type F 6-32 x 1/2 P - OVA - F - ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S S - P - Machine Screw, Cutting Undercut Oval ead Inch - Type F 6-32 x 1/2 P - UOVA - F - ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size / / / / / / / / / / / / / ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P 37 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

38 Machine Screw, Cutting Truss ead Inch - Type F 4-40 x 1/2 P - TRU - F - ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S S - P - 38 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

39 Machine Screws, Cutting Inch - Type 23 Pan ead Machine Screw, Pan ead 40 Machine Screw, Pan ead 40 Flat ead Machine Screw, 82 eg Flat ead 41 Machine Screw, 82 eg Undercut Flat ead 41 ex ead Machine Screw, Indented ex ead 42 Machine Screw, Indented ex Washer ead 42 Special Use eads Machine Screw, Oval ead 43 Machine Screw, Undercut Oval ead 43 Machine Screw, Truss ead 44 Pan ead Page 40 Indented ex Washer ead Page 42 Pan ead Page 40 Oval ead Page eg Flat ead Page 41 Undercut Oval ead Page eg Undercut Flat ead Page 41 Truss ead Page 44 Indented ex ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

40 Machine Screw, Cutting Pan ead Inch - Type x 1/2 P - PN ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / T / / T / / T / / T / / T25 1/ / / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe Machine Screw, Cutting Pan ead Inch - Type x 1/2 S - PN ST - ength rive Series Finish s eight ead iameter ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / /.357 1/ / /.473 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive S 40 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

41 Machine Screw, Cutting 82 eg Flat ead Inch - Type x 1/2 P - F ST - ength rive Series Finish 82 EG s eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S Machine Screw, Cutting 82 eg Undercut Flat ead Inch - Type x 1/2 P - UF ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 Finish - BK inc Black 1/ / / /8.625 /.595 rive 3/4.750 /.720 P 7/8.875 /.845 S / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

42 Machine Screw, Cutting Indented ex ead Inch - Type x 1/2 P - INX ST - ength rive Series Finish s eight Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 Finish - BK inc Black 1/ / / /8.625 /.595 rive 3/4.750 /.720 P 7/8.875 /.845 S /.970 US Unslotted / / / / Machine Screw, Cutting Indented ex Washer ead Inch - Type x 1/2 P - INX - WA ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size / / / / / / / / / / / / / / / / / / / / / / / / / ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted 42 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

43 Machine Screw, Cutting Oval ead Inch - Type x 1/2 P - OVA ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S S - P - Machine Screw, Cutting Undercut Oval ead Inch - Type x 1/2 P - UOVA ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 43 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

44 Machine Screw, Cutting Truss ead Inch - Type x 1/2 P - TRU ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S S - P - 44 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

45 Machine Screws, Cutting Inch - Type 1 Pan ead Machine Screw, Pan ead 46 Machine Screw, Pan ead 46 Flat ead Machine Screw, 82 eg Flat ead 47 Machine Screw, 82 eg Undercut Flat ead 47 ex ead Machine Screw, Indented ex ead 48 Machine Screw, Indented ex Washer ead 48 Special Use eads Machine Screw, Oval ead 49 Machine Screw, Undercut Oval ead 49 Machine Screw, Truss ead 50 Pan ead Page 46 Indented ex Washer ead Page 48 Pan ead Page 46 Oval ead Page eg Flat ead Page 47 Undercut Oval ead Page eg Undercut Flat ead Page 47 Truss ead Page 50 Indented ex ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

46 Machine Screw, Cutting Pan ead Inch - Type x 1/2 P - PN ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / T / / T / / T / / T / / T25 1/ / / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe Machine Screw, Cutting Pan ead Inch - Type x 1/2 S - PN ST - ength rive Series Finish s eight ead iameter ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / /.357 1/ / /.473 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive S 46 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

47 Machine Screw, Cutting 82 eg Flat ead Inch - Type x 1/2 P - F ST - ength rive Series Finish 82 EG s eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S Machine Screw, Cutting 82 eg Undercut Flat ead Inch - Type x 1/2 P - UF ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 47 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

48 Machine Screw, Cutting Indented ex ead Inch - Type x 1/2 P - INX ST - ength rive Series Finish s eight Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S US Unslotted Machine Screw, Cutting Indented ex Washer ead Inch - Type x 1/2 P - INX - WA ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size / / / / / / / / / / / / / / / / / / / / / / / / / ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted 48 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

49 Machine Screw, Cutting Oval ead Inch - Type x 1/2 P - OVA ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S S - P - Machine Screw, Cutting Undercut Oval ead Inch - Type x 1/2 P - UOVA ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 49 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

50 Machine Screw, Cutting Truss ead Inch - Type x 1/2 P - TRU ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S - P - S 50 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

51 Machine Screws, Forming Inch - Type TA Pan ead Machine Screw, Pan ead 52 Machine Screw, Pan ead 52 Flat ead Machine Screw, 82 eg Flat ead 53 Machine Screw, 82 eg Undercut Flat ead 53 ex ead Machine Screw, Indented ex ead 54 Machine Screw, Indented ex Washer ead 54 Special Use eads Machine Screw, Oval ead 55 Machine Screw, Undercut Oval ead 55 Machine Screw, Truss ead 56 Pan ead Page 52 Indented ex Washer ead Page 54 Pan ead Page 52 Oval ead Page eg Flat ead Page 53 Undercut Oval ead Page eg Undercut Flat ead Page 53 Truss ead Page 56 Indented ex ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

52 Machine Screw, Forming Pan ead Inch - Type TA 6-32 x 1/2 P - PN - TA - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / T / / T / / T / / T / / T25 1/ / / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S - P - TX 6 - obe S - TX obe Machine Screw, Forming Pan ead Inch - Type TA 4-40 x 1/2 S - PN - TA - ST - ength rive Series Finish s eight ead iameter ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / /.357 1/ / /.473 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive S 52 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

53 Machine Screw, Forming 82 eg Flat ead Inch - Type TA 2-56 x 1/2 P - F - TA - ST - ength rive Series Finish 82 EG s eight REF ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / T / T / T / T / T25 1/ / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe S Machine Screw, Forming 82 eg Undercut Flat ead Inch - Type TA 4-40 x 1/2 P - UF - TA - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size / / / / / / / / / / / / / ength 3/ /.167 1/4.250 /.230 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P S 53 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

54 Machine Screw, Forming Indented ex ead Inch - Type TA 6-32 x 1/2 P - INX - TA - ST - ength rive Series Finish s eight Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S US Unslotted Machine Screw, Forming Indented ex Washer ead Inch - Type TA 4-40 x 1/2 P - INX - WA - TA - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 Finish - BK inc Black 1/ / / / / /8.625 /.595 rive 3/4.750 /.720 P 7/8.875 /.845 S /.970 US Unslotted / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

55 Machine Screw, Forming Oval ead Inch - Type TA 6-32 x 1/2 P - OVA - TA - ST - ength rive Series Finish 82 EG S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S - P - Machine Screw, Forming Undercut Oval ead Inch - Type TA 6-32 x 1/2 P - UOVA - TA - ST - ength rive Series Finish S s Total ead eight S ead Side eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black P Passivate rive P S 55 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

56 Machine Screw, Forming Truss ead Inch - Type TA 4-40 x 1/2 P - TRU - TA - ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel / / / / / / / / / / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S S - P - 56 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

57 Socket Screws Inch - Type SOC Socket Screws Socket ead Cap Screw 58 Flat Countersunk ead Cap Screw 58 Button ead Cap Screw 59 Socket ead Cap Screw Page 58 Flat Countersunk ead Cap Screw Page 58 Button ead Cap Screw Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

58 Socket Screws Socket ead Cap Screw Inch 6-32 x 1/2 SOC - CAP - SC - AY - ength Series Finish K s J eight ead iameter J exagon Socket Size NOM K Key Engagement MIN ength 3/ /.157 1/4.250 /.220 AY Alloy Steel / / / / / / / / / / / / / / /.283 3/8.375 /.345 7/ /.408 1/2.500 /.470 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish BK - OX Black Oxide rive SOC ex Socket Socket Screws Flat Countersunk ead Cap Screw Inch K s 6-32 x 1/2 SOC - F- CAP - SC - AY - ength Series Finish 82 EG J eight REF ead iameter J exagon Socket Size NOM K Key Engagement MIN ength 3/ /.157 1/4.250 /.220 AY Alloy Steel / / / / / / / / /.283 3/8.375 /.345 7/ /.408 1/2.500 /.470 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish BK - OX Black Oxide rive SOC ex Socket 58 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

59 Socket Screws Button ead Cap Screw Inch 6-32 x 1/2 SOC - BUT - CAP - SC - AY - ength Series Finish K s J eight ead iameter J exagon Socket Size NOM K Key Engagement MIN ength 3/ /.157 1/4.250 /.220 AY Alloy Steel / / / / / / / / / / / /.283 3/8.375 /.345 7/ /.408 1/2.500 /.470 9/ /.533 Finish BK - OX Black Oxide 1/ / / /8.625 /.595 rive 3/4.750 /.720 SOC ex Socket 7/8.875 / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

60 Notes 60 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

61 Precision Shoulder Screw Inch - Type PS Precision Shoulder Screws Precision ead Shoulder Screw 62 Precision Socket ead Shoulder Screw 63 Precision ead Shoulder Screw 64 Precision ead Shoulder Screw Page 62 Precision Socket ead Shoulder Screw Page 63 Precision ead Shoulder Screw Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

62 Precision Shoulder Screw Precision ead Shoulder Screw Inch E s 1/8 x 3/ x 1/4 - P - CAP - PS - SC - AY - Shoulder iameter Shoulder ength ength rive Series Finish F E Shoulder iameter E Shoulder iameter ead iameter eight F ength rive Size ST Steel 300 Series Stainless Steel 1/ /4 1/8 5/32 1 5/ /32 1/8 3/16 2 3/ /16 5/32 3/16 2 1/ /8 3/16 1/4 2 S4 Finish - BK 400 Series Stainless Steel inc Black 5/ / /16 7/32 3/8 3 3/ / /2 7/32 1/2 3 1/ / /8 1/16 1/2 4 rive P Shoulder ength Shoulder ength /4-20 5/ /8-16 1/ / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

63 Precision Shoulder Screw Precision Socket ead Shoulder Screw Inch E s 1/8 x 3/ x 1/4 - SOC - CAP - PS - SC - AY - Shoulder iameter Shoulder ength ength rive Series Finish J F E Shoulder iameter E Shoulder iameter ead iameter eight F ength J rive ex ST Steel 300 Series Stainless Steel 1/ /4 1/8 5/32 5/64 5/ /32 1/8 3/16 5/64 3/ /16 5/32 3/16 3/32 1/ /8 3/16 1/4 1/8 S4 Finish - BK 400 Series Stainless Steel inc Black 5/ / /16 7/32 3/8 5/32 3/ / /2 1/4 4/16 5/32 1/ / /8 1/16 1/2 3/16 rive SOC ex Socket Shoulder ength Shoulder ength /4-20 5/ /8-16 1/ / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

64 Precision Shoulder Screw Precision ead Shoulder Screw Inch E s 1/8 x 3/ x 1/4 - S - CAP - PS - SC - AY - Shoulder iameter Shoulder ength ength rive Series Finish F E Shoulder iameter E Shoulder iameter ead iameter eight F ength 1/ /4 1/8 5/32 1/16 5/ /32 1/8 3/16 5/64 3/ /16 5/32 3/16 5/64 1/ /8 3/16 1/4 3/32 Slot Width ST S4 Finish - BK Steel 300 Series Stainless Steel 400 Series Stainless Steel inc Black 5/ / /16 7/32 3/8 1/8 3/ / /2 1/4 7/16 5/32 1/ / /8 1/6 1/2 3/16 rive S Shoulder ength Shoulder ength /4-20 5/ /8-16 1/ / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

65 Sheet Metal Screws, Forming Inch - Type B Pan ead Sheet Metal Screw, Pan ead 66 Sheet Metal Screw, Pan ead 66 Flat ead Sheet Metal Screw, 82 eg Flat ead 67 Sheet Metal Screw, 82 eg Undercut Flat ead 67 Sheet Metal Screw, 100 eg Flat ead 68 ex ead Sheet Metal Screw, Indented ex ead 68 Sheet Metal Screw, Indented ex Washer ead 69 Special Use eads Sheet Metal Screw, Oval ead 69 Sheet Metal Screw, Truss ead 70 Pan ead Page 66 Indented ex ead Page 68 Pan ead Page 66 Indented ex Washer ead Page eg Flat ead Page 67 Oval ead Page eg Undercut Flat ead Page 67 Truss ead Page eg Flat ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

66 Sheet Metal Screw, Forming Pan ead Inch - Type B #6 x 3/4 P - PN - B - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.062 / / T #4.080 / / T #6.097 / / T #8.115 / / T # / / T25 1/4-14 1/4.175 / / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe Sheet Metal Screw, Forming Pan ead Inch - Type B #6 x 3/4 S - PN - B - ST - ength rive Series Finish s eight ead iameter ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.053 / / #4.068 / / #6.082 / / #8.096 / / # / /.357 1/4-14 1/4.144 / /.473 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive S 66 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

67 Sheet Metal Screw, Forming 82 eg Flat ead Inch - Type B #6 x 7/8 P - F - B - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 # / # / # / # / # / /4-14 1/ / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S Sheet Metal Screw, Forming 82 eg Undercut Flat ead Inch - Type B #6 x 3/8 P - UF - B - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.036 / / #4.047 / / #6.059 / / #8.070 / / # / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 Finish - BK inc Black 1/4-14 1/4.107 / / /8.625 /.595 rive 3/4.750 /.720 P 7/8.875 /.845 S / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

68 Sheet Metal Screw, Forming 100 eg Flat ead Inch - Type B #4 x 5/16 P - 100G - B - ST - - BK ength rive Series Finish 100 EG s eight REF ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 4 24 # / # / # / # / /4 14 1/ / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S Sheet Metal Screw, Forming Indented ex ead Inch - Type B #10 x 3/4 P - INX - B - ST - ength rive Series Finish s eight Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2 32 #2.065 / / #4.084 / / #6.104 / / #8.123 / / # / / /4 14 1/4.186 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 68 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

69 Sheet Metal Screw, Forming Indented ex Washer ead Inch - Type B #8 x 5/8 P - INX - WA - B - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.050 / / / / #4.060 / / / / #6.093 / / / / #8.110 / / / / # / / / / /4-14 1/4.190 / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S US Unslotted Sheet Metal Screw, Forming Oval ead Inch - Type B #4 x 3/4 P - OVA - B - ST - ength rive Series Finish 82 EG S s eight ead iameter S ead Side eight rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2 32 #2.080 / / #4.104 / / #6.128 / / #8.152 / / # / / /4 14 1/4.232 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 69 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

70 Sheet Metal Screw, Forming Truss ead Inch - Type B #8 x 1/2 P - TRU - B - ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.053 / / #4.069 / / #6.086 / / #8.102 / / # / / /4-14 1/4.150 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 70 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

71 Sheet Metal Screws, Forming Inch - Type AB Pan ead Sheet Metal Screw, Pan ead 72 Sheet Metal Screw, Pan ead 72 Flat ead Sheet Metal Screw, 82 eg Flat ead 73 Sheet Metal Screw, 82 eg Undercut Flat ead 73 ex ead Sheet Metal Screw, Indented ex ead 74 Sheet Metal Screw, Indented ex Washer ead 74 Special Use eads Sheet Metal Screw, Oval ead 75 Sheet Metal Screw, Undercut Oval ead 75 Sheet Metal Screw, Truss ead 76 Pan ead Page 72 Indented ex Washer ead Page 74 Pan ead Page 72 Oval ead Page eg Flat ead Page 73 Undercut Oval ead Page eg Undercut Flat ead Page 73 Truss ead Page 76 Indented ex ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

72 Sheet Metal Screw, Forming Pan ead Inch - Type AB #6 x 1/2 P - PN - AB - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.062 / / T #4.080 / / T #6.097 / / T #8.115 / / T # / / T20 1/4-14 1/4.175 / / T27 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe S - P - Sheet Metal Screw, Forming Pan ead Inch - Type AB #6 x 1/2 S - PN - AB - ST - ength rive Series Finish s eight ead iameter ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.053 / / #4.068 / / #6.082 / / #8.096 / / # / /.357 1/4-14 1/4.144 / /.473 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive S 72 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

73 Sheet Metal Screw, Forming 82 eg Flat ead Inch - Type AB #8 x 3/4 P - F - AB - ST - ength rive Series Finish 82 EG s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 # / T # / T # / T # / T # / T20 1/4-14 1/ / T27 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S TX 6 - obe Sheet Metal Screw, Forming 82 eg Undercut Flat ead Inch - Type AB #4 x 5/16 P - UF - AB - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.036 / / #4.047 / / #6.059 / / #8.070 / / # / / /4-14 1/4.107 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 73 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

74 Sheet Metal Screw, Forming Indented ex ead Inch - Type AB #8 x 1/2 P - INX - AB - ST - ength rive Series Finish s eight Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.065 / / #4.084 / / #6.104 / / #8.123 / / # / / /4-14 1/4.186 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S US Unslotted Sheet Metal Screw, Forming Indented ex Washer ead Inch - Type AB #4 x 1/4 P - INX - WA - AB - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.050 / / / / #4.060 / / / / #6.093 / / / / #8.110 / / / / # / / / / /4-14 1/4.190 / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S US Unslotted 74 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

75 Sheet Metal Screw, Forming Oval ead Inch - Type AB #6 x 1/2 P - OVA - AB - ST - ength rive Series Finish 82 EG S s Total ead eight ead iameter S ead Side eight REF rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.080 / / #4.104 / / #6.128 / / #8.152 / / # / / /4-14 1/4.232 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S Sheet Metal Screw, Forming Undercut Oval ead Inch - Type AB S s #10 x 3/4 P - UOVA - AB - ST - ength rive Series Finish 82 EG Total ead eight ead iameter S ead Side eight REF rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.065 / / #4.084 / / #6.104 / / #8.123 / / # / / /4-14 1/4.186 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 75 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

76 Sheet Metal Screw, Forming Truss ead Inch - Type AB #8 x 1/2 P - TRU - AB - ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.230 ST ow Carbon Steel 2-32 #2.053 / / #4.069 / / #6.086 / / #8.102 / / # / / /4-14 1/4.150 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 76 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

77 Sheet Metal Screws, Cutting Inch - Type 25 Pan ead Sheet Metal Screw, Pan ead 78 Sheet Metal Screw, Pan ead 78 Flat ead Sheet Metal Screw, 82 eg Flat ead 79 Sheet Metal Screw, 82 eg Undercut Flat ead 79 ex ead Sheet Metal Screw, Indented ex Washer ead 80 Pan ead Page 78 Pan ead Page eg Flat ead Page eg Undercut Flat ead Page 79 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

78 Sheet Metal Screw, Cutting Pan ead Inch - Type 25 #6 x 1/2 P - PN ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength 3/ /.167 1/4.250 /.250 ST ow Carbon Steel 2-32 #2.062 / / T #4.080 / / T #6.097 / / T #8.115 / / T # / / T25 1/4-14 1/4.175 / / T30 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P TX 6 - obe Sheet Metal Screw, Cutting Pan ead Inch - Type 25 #4 x 1/2 S - PN ST - ength rive Series Finish s eight ead iameter ength 3/ /.167 1/4.250 /.250 ST ow Carbon Steel 2-32 #2.053 / / #4.068 / / #6.082 / / #8.096 / / # / /.407 1/4-14 1/4.125 / /.473 5/ /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive S 78 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

79 Sheet Metal Screw, Cutting 82 eg Flat ead Inch - Type 25 #4 x 1/2 P - F ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.250 ST ow Carbon Steel 2-32 #2.051 / / #4.067 / / #6.083 / / #8.100 / / # / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 Finish - BK inc Black 1/4-14 1/4.153 / / /8.625 /.595 rive 3/4.750 /.720 P 7/8.875 /.845 S / / / / / Sheet Metal Screw, Cutting 82 eg Undercut Flat ead Inch - Type 25 #4 x 1/2 P - UF ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.167 1/4.250 /.250 ST ow Carbon Steel 2-32 #2.036 / / #4.047 / / #6.059 / / #8.070 / / # / / /4-14 1/4.107 / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S 79 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

80 Sheet Metal Screw, Cutting Indented ex Washer ead Inch - Type 25 #6 x 1/2 P - INX - WA ST - ength rive Series Finish W s G eight G Washer Outside iameter Width Across Flats W Washer Thickness rive Size Cross Recess ength 3/ /.167 1/4.250 /.250 ST ow Carbon Steel 2-32 #2.050 / / / / #4.060 / / / / #6.093 / / / / #8.110 / / / / # / / / / /4-14 1/4.190 / / / / / /.293 3/8.375 /.355 7/ /.418 1/2.500 /.480 9/ /.533 5/8.625 /.595 3/4.750 /.720 7/8.875 / / / / / / Finish - BK inc Black rive P S US Unslotted 80 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

81 Screws For Plastic, Forming Inch - Type Pan ead Screws For Plastic, Pan ead 82 Screws For Plastic, Pan ead 82 Flat ead Screws For Plastic, 82 eg Flat ead 83 Screws For Plastic, 82 eg Undercut Flat ead 83 ex ead Screws For Plastic, Indented ex Washer ead 84 Pan ead Page 82 Pan ead Page eg Flat ead Page eg Undercut Flat ead Page 83 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

82 Screws For Plastic, Forming Pan ead Inch - Type #4 x 3/8 P - PN - - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size Six-obe ength 3/ /.140 1/4.250 /.203 ST ow Carbon Steel 2 32 #2.062 / / T #4.071 / / T #5.080 / / T #6.097 / / T #7.097 / / T #8.097 / / T # / / T # / / T 25 1/4 15 1/4.175 / / T 30 5/ /.266 3/8.375 /.328 7/ /.391 1/2.500 /.453 9/ /.516 5/8.625 /.578 3/4.750 /.703 7/8.875 / / / / / / / / / Finish - BK inc Black rive P TX 6 - obe Screws For Plastic, Forming Pan ead Inch - Type #4 x 3/8 S - PN - - ST - ength rive Series Finish s eight ead iameter 2 32 #2.053 / / #4.060 / / #5.068 / / #6.075 / / #7.082 / / #8.082 / / # / / # / /.357 1/4 15 1/4.144 / /.473 ength 3/ /.140 1/4.250 /.203 5/ /.266 3/8.375 /.328 7/ /.391 1/2.500 /.453 9/ /.516 5/8.625 /.578 3/4.750 /.703 7/8.875 / / / / / / / / / ST ow Carbon Steel Finish - BK inc Black rive S 82 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

83 Screws For Plastic, Forming 82 eg Flat ead Inch - Type #4 x 7/8 P - F - - ST - ength rive Series Finish 82 EG s eight REF ead iameter rive Size ength 3/ /.140 1/4.250 /.203 ST ow Carbon Steel 2 32 # / # / # / # / # / # / /4 15 1/ / / /.266 3/8.375 /.328 7/ /.391 1/2.500 /.453 9/ /.516 5/8.625 /.578 3/4.750 /.703 7/8.875 / / / / / / / / / Finish - BK inc Black rive P Screws For Plastic, Forming 82 eg Undercut Flat ead Inch - Type #4 x 7/8 P - UF - - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size Cross Recess ength 3/ /.140 1/4.250 /.203 ST ow Carbon Steel 2 32 #2.036 / / #4.047 / / #6.059 / / #8.070 / / # / / # / / /4 15 1/4.107 / / / /.266 3/8.375 /.328 7/ /.391 1/2.500 /.453 9/ /.516 5/8.625 /.578 3/4.750 /.703 7/8.875 / / / / / / / / / Finish - BK inc Black rive P S 83 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

84 Screws For Plastic, Forming Indented ex Washer ead Inch - Type #4 x 7/8 P - INX - WA - - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size Cross Recess ength 3/ /.140 1/4.250 /.203 ST ow Carbon Steel 4 24 #4.055 / / / / #6.070 / / / / #8.093 / / / / # / / / / # / / / / /4 15 1/4.190 / / / / / / / / / / / /.266 3/8.375 /.328 7/ /.391 1/2.500 /.453 9/ /.516 5/8.625 /.578 3/4.750 /.703 7/8.875 / / / / / / / / / Finish - BK inc Black rive P S US Unslotted 84 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

85 Screws For Plastic, Forming Inch - Type PAST 48/2 Pan ead Screws For Plastic, Pan ead 86 Screws For Plastic, Pan ead 86 Flat ead Screws For Plastic, 82 eg Flat ead 87 Screws For Plastic, 82 eg Undercut Flat ead 87 ex ead Screws For Plastic, Indented ex Washer ead 88 Special Use eads Screws For Plastic, Truss ead 88 Pan ead Page 86 Pan ead Page eg Flat ead Page eg Undercut Flat ead Page 87 Indented ex Washer ead Page 88 Truss ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

86 Screws For Plastic, Forming Pan ead Inch - Type PAST 48/2 #4 x 3/8 P - PN - PAST 48/2 - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe 2-28 #2.062 / / T #4.080 / / T #6.097 / / T #8.115 / / T # / / T25 1/4-10 #1/4.175 / / T30 ength 3/ /.157 1/4.280 /.220 5/ /.283 3/8.405 /.345 7/ /.408 1/2.530 /.470 9/ /.533 5/8.655 /.595 3/4.780 /.720 7/8.925 / / / / / / / / / ST ow Carbon Steel Finish - BK inc Black rive P TX 6 - obe Screws For Plastic, Forming Pan ead Inch - Type PAST 48/2 #4 x 3/8 S - PN - PAST 48/2 - ST - ength rive Series Finish s eight ead iameter 2-28 #2.053 / / #4.068 / / #6.082 / / #8.096 / / # / /.357 1/4-10 #1/4.144 / /.473 ength 3/ /.157 1/4.280 /.220 5/ /.283 3/8.405 /.345 7/ /.408 1/2.530 /.470 9/ /.533 5/8.655 /.595 3/4.780 /.720 7/8.925 / / / / / / / / / ST ow Carbon Steel Finish - BK inc Black rive S 86 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

87 Screws For Plastic, Forming 82 eg Flat ead Inch - Type PAST 48/2 #4 x 7/8 P - F - PAST 48/2 - ST - ength rive Series Finish 82 EG s eight REF ead iameter rive Size ength 3/ /.157 1/4.280 /.220 ST ow Carbon Steel 2-28 # / # / # / # / # / /4-10 #1/ / / /.283 3/8.405 /.345 7/ /.408 1/2.530 /.470 9/ /.533 5/8.655 /.595 3/4.780 /.720 7/8.925 / / / / / / / / / Finish - BK inc Black rive P TX 6 - obe Screws For Plastic, Forming 82 eg Undercut Flat ead Inch - Type PAST 48/2 #4 x 3/8 P - UF - PAST 48/2 - ST - ength rive Series Finish 82 EG s eight ead iameter rive Size ength 3/ /.157 1/4.280 /.220 ST ow Carbon Steel 2-19 #2.036 / / #4.047 / / #6.059 / / #8.070 / / # / / /4-8 #1/4.107 / / / /.283 3/8.405 /.345 7/ /.408 1/2.530 /.470 9/ /.533 5/8.655 /.595 3/4.780 /.720 7/8.925 / / / / / / / / / Finish - BK inc Black rive P TX 6 - obe 87 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

88 Screws For Plastic, Forming Indented ex Washer ead Inch - Type PAST 48/2 W s #8 x 5/8 P - INX - WA - PAST 48/2 - ST - ength rive Series Finish G eight G Washer Outside iameter W Washer Thickness Width Across Flats rive Size Cross Recess ength 3/ /.157 1/4.280 /.220 ST ow Carbon Steel 2-28 #2.050 / / / / #4.060 / / / / #6.093 / / / / #8.110 / / / / # / / / / /4-10 #1/4.190 / / / / / /.283 3/8.405 /.345 7/ /.408 1/2.530 /.470 9/ /.533 5/8.655 /.595 3/4.780 /.720 7/8.925 / / / / / / / / / Finish - BK inc Black rive P S US Unslotted Screws For Plastic, Forming Truss ead Inch - Type PAST 48/2 #8 x 1/2 P - TRU - PAST 48/2 - ST - ength rive Series Finish s eight ead iameter rive Size ength 3/ /.157 1/4.280 /.220 ST ow Carbon Steel 2-28 #2.053 / / #4.069 / / #6.086 / / #8.102 / / # / / /4-10 #1/4.150 / / / /.283 3/8.405 /.345 7/ /.408 1/2.530 /.470 9/ /.533 5/8.655 /.595 3/4.780 /.720 7/8.925 / / / / / / / / / Finish - BK inc Black rive P S 88 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

89 Nuts Inch Nuts ex Nuts 90 ex Jam Nuts 90 Machine Screw Nuts 91 Machine Screw Nuts, Small Pattern 91 KPS Nuts 92 Conical KPS Nuts 92 ex Flange Nuts 93 Serrated Flange ocknuts 93 Flange Side ocknuts 94 Flange Top ocknuts 94 Cap Nuts 95 Nylon Insert ocknuts 95 Nylon Insert ocknuts, Thin Pattern 96 Panel Nuts 96 ex Nuts Page 90 Conical KPS Nuts Page 92 Cap Nuts Page 95 ex Jam Nuts Page 90 ex Flange Nuts Page 93 Nylon Insert ocknuts Page 95 Machine Screw Nuts Page 91 Serrated Flange ocknuts Page 93 Nylon Insert ocknuts, Thin Pattern Page 96 Machine Screw Nuts, Small Pattern Page 91 Flange Side ocknuts Page 94 Panel Nuts Page 96 KPS Nuts Page 92 Flange Top ocknuts Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

90 Nuts ex Nut Inch 1/4-20 X - NU - ST - Series Finish T Coarse Fine T Thickness Width Across Flats ST ow Carbon Steel 1/4-20 1/ / /.428 5/ / / /.489 3/8-16 3/ / /.551 7/ / / /.675 1/2-13 1/ / /.736 Finish - BK inc Black 9/ / / /.861 5/8-11 5/ / /.922 3/4-10 3/ / / Nuts ex Jam Nut Inch 3/8-16 X - JAM - NU - ST - Series Finish T Coarse Fine T Thickness Width Across Flats ST ow Carbon Steel 1/4-20 1/ / /.428 5/ / / /.489 3/8-16 3/ / /.551 7/ / / /.675 1/2-13 1/ / /.736 Finish - BK inc Black 9/ / / /.861 5/8-11 5/ / /.922 3/4-10 3/ / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

91 Nuts Machine Screw Nut Inch 4-40 X - MS - NU - ST - Series Finish T Coarse Fine T Thickness Width Across Flats ST ow Carbon Steel / / / / / / / / / /.302 Finish - BK inc Black / / / / / /.423 1/4-20 1/ / /.423 5/ / / /.545 3/8-16 3/ / /.607 Nuts Machine Screw Nut, Small Pattern Inch 4-40 X - MS - NU - ST - - SMA PATTERN Series Finish T T Thickness Width Across Flats / / / / / / / / / /.302 ST ow Carbon Steel Finish - BK inc Black / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

92 Nuts KPS Nut Inch 8-32 KPS - NU - ST - Series Finish T Coarse Fine T Thickness iameter Width Across Flats ST ow Carbon Steel / / / / / / SP / / / / / / / / /.362 Finish - BK inc Black / / /.423 1/4-20 1/ / / /.423 5/ / / / /.489 3/8-16 3/ / / /.551 1/2-13 1/ / / /.736 Nuts Conical Washer KPS Nut Inch 1/4-20 KPS - NU - CON - WA - ST - Series Finish T M G Coarse Fine T Thickness G Washer Outside iameter MAX Width Across Flats M Flange Thickness MIN ST ow Carbon Steel 1/4-20 1/ / / / / / / /8 / 16 3/ / / / / / / /2-13 1/ / / Finish - BK inc Black 5/8-11 5/ / / /4-10 3/ / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

93 Nuts ex Flange Nut Inch 1/4-20 X - FANGE - NU - ST - Series Finish T Coarse Fine T Thickness iameter Width Across Flats ST ow Carbon Steel / / / / / / / / /.365 1/4-20 1/ / / /.428 5/ / / / /.489 Finish - BK inc Black 3/8-16 3/ / / /.551 7/ / / / /.675 1/2-13 1/ / / /.736 5/8-11 5/ / / /.922 3/4-10 3/ / / / Nuts Serrated Flange ocknut Inch T 5/16-18 SERR - X - FANGE - NU - ST - Series Finish Coarse Fine T Thickness iameter Width Across Flats ST ow Carbon Steel / / / / / / / / /.365 1/4-20 1/ / / /.428 5/ / / / /.489 Finish - BK inc Black 3/8-16 3/ / / /.551 7/ / / / /.675 1/2-13 1/ / / /.736 5/8-11 5/ / / /.922 3/4-10 3/ / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

94 Nuts Flange Side ocknut Inch T 1/4-20 X - FANGE - SK - NU - ST - Series Finish Coarse Fine T Thickness iameter Width Across Flats ST ow Carbon Steel / / / / / / / / /.365 1/4-20 1/ / / /.428 5/ / / / /.489 Finish - BK inc Black 3/8-16 3/ / / /.551 7/ / / / /.675 1/2-13 1/ / / /.736 5/8-11 5/ / / /.922 3/4-10 3/ / / / Nuts Flange Top ocknut Inch T 1/4-20 X - FANGE - TK - NU - ST - Series Finish Coarse Fine T Thickness iameter Width Across Flats ST ow Carbon Steel / / / / / / / / /.365 1/4-20 1/ / / /.428 5/ / / / /.489 Finish - BK inc Black 3/8-16 3/ / / /.551 7/ / / / /.675 1/2-13 1/ / / /.736 5/8-11 5/ / / /.922 3/4-10 3/ / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

95 Nuts Cap Nut Inch X - CAP - NU - ST - Series Finish R eight REF Width Across Flats R Full MIN ST ow Carbon Steel / / / / / / / Finish - BK inc Black 3/ / / / / / / / Nuts Nylon Insert ocknut Inch NY - IN - K - NU - ST - Series Finish T S Coarse Fine T Thickness Width Across Flats S Side eight REF ST ow Carbon Steel / / / / / / / / /4-20 1/ / / Finish - BK inc Black 5/ / / / /8-16 3/ / / / / / / /2-13 1/ / / / / / / /8-11 5/ / / /4-10 3/ / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

96 Nuts Nylon Insert ocknut, Thin Pattern Inch 8-32 NY - IN - K - NU - ST - - TIN Series Finish T S Coarse Fine T Thickness Width Across Flats S Side eight REF ST ow Carbon Steel / / / / / / / / /4-20 1/ / / Finish - BK inc Black 5/ / / / /8-16 3/ / / / / / / /2-13 1/ / / / / / / /8-11 5/ / / /4-10 3/ / / Nuts Panel Nut Inch 3/8-32 X - PANE - NU - ST - Series Finish T T Thickness Width Across Flats ST ow Carbon Steel 1/8-27 1/8 9/16 1/8-27 3/16 9/16 3/8-32 3/32 1/2 3/8-32 3/32 9/16 BRS Finish Brass 15/ /32 9/16 N Nickel 96 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

97 Washers Inch Washers ock Washer, External Tooth 98 ock Washer, Internal Tooth 99 ock Washer, Internal External Tooth 100 Plain Washer, Type A 101 Plain Washer, Type B - Narrow, Wide, Regular 102 ock Washer, Split ock Washer 103 ock Washer, External Tooth Page 98 Plain Washer, Type A Page 101 ock Washer, Internal Tooth Page 99 Plain Washer, Type B - Narrow, Wide, Regular Page 102 ock Washer, Internal External Tooth Page 100 ock Washer, Split ock Washer Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

98 Washer ock Washer - External tooth Inch #6 EXT - K - WA - ST - Size Series Finish A B T Nominal Washer Size T Thickness A Inside iameter B Outside iameter # / / /.220 # / / /.245 # / / /.270 # / / /.305 ST ow Carbon Steel Finish # / / /.365 # / / /.395 # / / /.460 #1/4 1/ / / /.494 #5/16 5/ / / /.588 #3/8 3/ / / /.670 #7/16 7/ / / /.740 #1/2 1/ / / /.880 #9/16 9/ / / /.960 #5/8 5/ / / / #11/16 11/ / / / #3/4 3/ / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

99 Washer ock Washer - Internal Tooth Inch #6 INT - K - WA - ST - Size Series Finish A B T Nominal Washer Size T Thickness A Inside iameter B Outside iameter # / / /.175 # / / /.215 # / / /.245 # / / /.255 ST ow Carbon Steel Finish # / / /.275 # / / /.325 # / / /.365 # / / /.394 #1/4 1/ / / /.460 #5/16 5/ / / /.594 #3/8 3/ / / /.670 #7/16 7/ / / /.740 #1/2 1/ / / /.867 #9/16 9/ / / /.957 #5/8 5/ / / / #11/16 11/ / / / #3/4 3/ / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

100 Washer ock Washer - Internal External Tooth Inch #6 INT/EXT - K - WA - ST - Size Series Finish A B T Nominal Washer Size T Thickness A Inside iameter B Outside iameter ST ow Carbon Steel / / / / / / /.580 Finish / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /.965 1/ / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

101 Washer Plain Washer - A Inch #6 A - NAR - F - WA - ST - Size Type Series Finish A B T Nominal Washer Size Type Type T Thickness A Inside iameter B Outside iameter Basic MAX / MIN Basic + / - Basic + / / / / / / / / / / / / / / / /.005 ST ow Carbon Steel Finish / / / / / /.005 3/ / / / / / /.005 1/ Narrow NAR / / /.005 1/ Wide WIE / / /.007 5/ Narrow NAR / / /.007 5/ Wide WIE / / /.007 3/ Narrow NAR / / /.007 3/ Wide WIE / / /.007 7/ Narrow NAR / / /.007 7/ Wide WIE / / /.007 1/ Narrow NAR / / /.007 1/ Wide WIE / / /.007 9/ Narrow NAR / / /.007 9/ Wide WIE / / /.007 5/ Narrow NAR / / /.007 5/ Wide WIE / / /.007 3/ Narrow NAR / / /.007 3/ Wide WIE / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

102 Washer Plain Washer - B Narrow, Regular, Wide Inch #6 B - NAR - F - WA - ST - Size Type Series Finish A A A B T B T B T Narrow Regular Wide Size Nominal Washer Size Type Type T Thickness A Inside iameter B Outside iameter Basic MAX / MIN Basic + / - Basic + / - ST ow Carbon Steel # # Narrow Regular Wide Narrow Regular Wide NAR REG WIE NAR REG WIE / / / / / / / / / / / / / / / / / /.005 Finish # Narrow Regular Wide NAR REG WIE / / / / / / / / /.005 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.005 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.005 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.005 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.005 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.005 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 # Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 1/4 1/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 5/16 5/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 3/8 3/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 7/16 7/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 1/2 1/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 9/16 6/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 5/8 5/ Narrow Regular Wide NAR REG WIE / / / / / / / / /.007 3/4 3/ Narrow Regular Wide NAR REG WIE / / / / / / / / / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

103 Washer ock Washer - Split ock Washer Inch - Type WA #6 SPT - K - WA - ST - Size Series Finish A B T Size Nominal Washer Size T Thickness MIN A Inside iameter B Outside iameter MAX # / # / # / # / ST ow Carbon Steel Finish # / # / # / # / #1/4 1/ / #5/16 5/ / #3/8 3/ / #7/16 7/ / #1/2 1/ / #9/16 9/ / #5/8 5/ / #11/16 11/ / #3/4 3/ / Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

104 Notes 104 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

105 Machine Screws Metric Pan ead Machine Screw, Pan ead 106 Machine Screw, Pan ead 106 Flat ead Machine Screw, 90 eg Flat ead 107 ex ead Machine Screw, Indented ex ead 107 Machine Screw, Indented ex Washer ead 108 SEMS Machine Screw, Internal Tooth ock Washers SEMS 108 Machine Screw, Square Cone ock Washer SEMS 109 Machine Screw, External Tooth ock Washer SEMS 109 Machine Screw, Split Ring ock Washer SEMS 110 Special Use eads Machine Screw, Button ead 110 Machine Screw, Oval ead 111 Machine Screw, Oval ead 111 Pan ead Page 106 Square Cone ock Washer SEMS Page 109 Pan ead Page 106 External Tooth ock Washer SEMS Page eg Flat ead Page 107 Split Ring ock Washer SEMS Page 110 Indented ex ead Page 107 Button ead Page 110 Indented ex Washer ead Page 108 Oval ead Page 111 Internal Tooth ock Washer SEMS Page 108 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

106 Machine Screw Pan ead Metric M4 x 10MM P - PN - MS - ST - ength rive Series Finish ASME B M** s eight ead iameter Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M2 x / / T6 M2.5 x / / T8 M3 x / / T10 M3.5 x / / T15 M4 x / / T20 M5 x / / T25 M6 x / / T / / / / / / / / / / / 34.5 Finish - BK inc Black rive P P Pozi TX 6 - obe S - P - S - TX obe * Same size for POI rive ** ISO 7045 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw Pan ead Metric M4 x 10MM S - PN - MS - ST - ength rive Series Finish s ASME B18.6.7** eight ead iameter ength / / 3.7 ST ow Carbon Steel M2 x / / 3.7 M2.5 x / / 4.7 M3 x / / 5.3 M3.5 x / / 6.6 M4 x / / 7.6 M5 x / / 9.1 M6 x / / / / / / / / / / / / / 34.5 Finish - BK inc Black rive S 106 ** ISO 1580 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

107 Machine Screw 90 eg Flat ead Metric M4 x 10MM P - F - MS - ST - ength rive Series Finish ASME B18.6.7M** 90 EG s eight MAX REF ead iameter Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M2 x / T6 M2.5 x / T8 M3 x / T10 M3.5 x / T15 M4 x / T20 M5 x / T25 M6 x / T / / / / / / / / / / / 34.5 Finish - BK inc Black rive P S TX 6 - obe P Pozi * Same size for POI rive ** ISO 7046 / 2009 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw Indented ex ead Metric M4 x 10MM P - INX - MS - ST - ength rive Series Finish s ASME B18.6.7M eight Width Across Flats rive Size ength / / 3.7 ST ow Carbon Steel M2 x / / M2.5 x / / M3 x / / M3.5 x / / M4 x / / M5 x / / M6 x / / M8 x / / M10 x / / / / / / / / / / / / / 34.5 Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. 107 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

108 Machine Screw Indented ex Washer ead Metric M4 x 10MM P - INX - WA - MS - ST - ength rive Series Finish W s G eight MAX G Washer Outside iameter Width Across Flats W Washer Thickness rive Size ength / / 3.7 ST ow Carbon Steel M2 x / / / M2.5 x / / / M3 x / / / M3.5 x / / / M4 x / / / / / / / / 11.6 Finish - BK inc Black M5 x / / / / 13.6 rive M6 x / / / / 15.6 P M8 x / / / / 19.5 S M10 x / / / / 24.5 US Unslotted / / 34.5 * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw Internal Tooth ock Washer SEMS Metric M4 x 10MM P - PN - INT - SEMS - MS - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M2.5 x / / /.30 1 T8 M3 x / / /.30 1 T10 M3.5 x / / /.40 2 T15 M4 x / / /.45 2 T20 M5 x / / /.50 2 T25 M6 x / / /.60 3 T30 M8 x / / /.70 4 T / / / / / / / / / / / 34.5 Finish - BK inc Black rive P S - P TX 6 - obe S - TX obe P Pozi 108 * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

109 Machine Screw Square Cone ock Washer SEMS Metric M4 x 10MM P - PN - SQCN - SEMS - MS - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer eight Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M3 x / / /.99 1 T10 M3.5 x / / /.99 2 T15 M4 x / / / T20 M5 x / / / T25 M6 x / / / T / / / / / / / / / / / 34.5 Finish - BK inc Black rive P S - P - TX 6 - obe S - TX obe P Pozi * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw External Tooth ock Washer SEMS Metric M4 x 10MM P - PN - EXT - SEMS - MS - ST - ength rive Series Finish W s ASME B M G eight G Washer Outside iameter W Washer Thickness Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M2.5 x / / /.30 1 T8 M3 x / / /.30 1 T10 M3.5 x / / /.40 2 T15 M4 x / / /.45 2 T20 M5 x / / /.50 2 T25 M6 x / / /.60 3 T30 M8 x / / /.70 4 T / / / / / / / / / / / 34.5 Finish - BK inc Black rive P S - P - TX 6 - obe S - TX obe P Pozi * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. 109 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

110 Machine Screw Split Ring ock Washer SEMS Metric M4 x 10MM P - PN - SPIT - SEMS - MS - ST - ength rive Series Finish W s G eight G Washer Outside iameter W Washer Thickness MIN Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M2.5 x / / T8 M3 x / / T10 M3.5 x / / T15 M4 x / / T20 M5 x / / T25 M6 x / / T / / / / / / / / / / / 34.5 Finish - BK inc Black rive P S P Pozi * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw Button ead Metric M4 x 10MM TX - BUT - MS - ST - ength rive Series Finish s ASME / ANSI B18.3.4M eight iameter ex Size rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M3 x / / T8 M4 x / / T15 M5 x / / T25 M6 x / / T27 M8 x / / T40 M10 x / / T45 M12 x / / T / / / / / / / / / / / / 39.5 Finish - BK inc Black rive TX 6 - obe S - TX obe SOC ex Socket 110 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

111 Machine Screw Oval ead Metric M4 x 10MM P - OVA - MS - ST - ength rive Series Finish ASME B M** 82 EG S s Raised ead eight MAX ead iameter S ead Side eight MAX / REF Cross Recess rive Size 6 - obe ength / / 3.7 ST ow Carbon Steel M2 x / T6 M2.5 x / T8 M3 x / T10 M3.5 x / T15 M4 x / T / / / / / 11.6 Finish - BK inc Black M5 x / T / 13.6 rive M6 x / T / 15.6 P M8 x / T / 19.5 S - P - M10 x / T / 24.5 P Pozi / / 34.5 * Same size for POI rive ** ISO 7047 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw Oval ead Metric M4 x 10MM S - OVA - MS - ST - ength rive Series Finish ASME B18.6.7M** 90 EG S s Raised ead eight MAX ead iameter S ead Side eight MAX / REF ength / / 3.7 ST ow Carbon Steel M2 x / M2.5 x / M3 x / M3.5 x / M4 x / M5 x / M6 x / M8 x / M10 x / / / / / / / / / / / / 34.5 Finish - BK inc Black rive S ** ISO 2010 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. 111 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

112 Notes 112 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

113 Machine Screws, Cutting Metric - Type F Pan ead Machine Screw, Pan ead 114 Machine Screw, Pan ead 114 Flat ead Machine Screw, 90 eg Flat ead 115 ex ead Machine Screw, Indented ex ead 115 Machine Screw, Indented ex Washer ead 116 Special Use eads Machine Screw, Oval ead 116 Pan ead Page 114 Indented ex ead Page 115 Pan ead Page 114 Indented ex Washer ead Page eg Flat ead Page 115 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

114 Machine Screw, Cutting Pan ead Metric - Type F M4 x 10MM P - PN - F - ST - ength rive Series Finish ASME B18.6.5M** s eight ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / / T6 M2.5 x / / T8 M3 x / / T10 M3.5 x / / T15 M4 x / / T20 M5 x / / T20 M6 x / / T30 M8 x / / T40 M10 x / / T / / / / / / / / / / / 43.5 Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive ** ISO 7049 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Pan ead Metric - Type F M4 x 10MM S - PN - F - ST - ength rive Series Finish ASME B18.6.5M** s eight ead iameter ength / / 4.2 ST ow Carbon Steel M2 x / / 3.7 M2.5 x / / 4.7 M3 x / / 5.3 M3.5 x / / 6.6 M4 x / / 7.6 M5 x / / 9.1 M6 x / / 11.5 M8 x / / 15.5 M10 x / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive S 114 ** ISO 1481 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

115 Machine Screw, Cutting 90 eg Flat ead Metric - Type F M4 x 10MM P - F - F - ST - ength rive Series Finish ASME B18.6.5M** 90 EG s eight MAX / REF ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / T6 M2.5 x / T8 M3 x / T10 M3.5 x / T15 M4 x / T / / / / / 15.2 Finish - BK inc Black M5 x / T / 19.2 rive M6 x / T / 23.8 P M8 x / T / 28.8 S M10 x / T / 33.8 TX 6 - obe / 38.8 P Pozi / 43.5 * Same size for POI rive ** ISO 7050 / 1482 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Indented ex ead Metric - Type F M4 x 10MM P - INX - F - ST - ength rive Series Finish s ASME B18.6.5M** eight Width Across Flats rive Size M2 x / / M2.5 x / / M3 x / / M3.5 x / / M4 x / / ength / / / / / / / 15.2 ST ow Carbon Steel Finish - BK inc Black M5 x / / / 19.2 rive M6 x / / / 23.8 P M8 x / / / 28.8 S M10 x / / / 33.8 US Unslotted / / 43.5 ** ISO 1479 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. 115 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

116 Machine Screw, Cutting Indented ex Washer ead Metric - Type F M4 x 10MM P - INX - WA - F - ST - ength rive Series Finish W s G eight MAX G Washer Outside iameter Width Across Flats W Washer Thickness rive Size ength / / 4.2 ST ow Carbon Steel M2 x / / / M2.5 x / / / M3 x / / / M3.5 x / / / M4 x / / / M5 x / / / M6 x / / / 1 3 M8 x / / / M10 x / / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Oval ead Metric - Type F M4 x 10MM P - OVA - F - ST - ength rive Series Finish ASME B18.6.5M** 90 EG S s ead eight MAX ead iameter S ead Side eight MAX / REF rive Size ength / / 4.2 ST ow Carbon Steel M2 x / M2.5 x / M3 x / M3.5 x / M4 x / M5 x / M6 x / M8 x / M10 x / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S S - P - P Pozi 116 * Same size for POI rive ** ISO 7051 / 1483 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

117 Machine Screws, Cutting Metric - Type 23 Pan ead Machine Screw, Pan ead 118 Machine Screw, Pan ead 118 Flat ead Machine Screw, 90 eg Flat ead 119 ex ead Machine Screw, Indented ex ead 119 Machine Screw, Indented ex Washer ead 120 Special Use eads Machine Screw, Oval ead 120 Pan ead Page 118 Indented ex ead Page 119 Pan ead Page 118 Indented ex Washer ead Page eg Flat ead Page 119 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

118 Machine Screw, Cutting Pan ead Metric - Type 23 M4 x 10MM P - PN ST - ength rive Series Finish ASME B18.6.5M** s eight ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / / T6 M2.5 x / / T8 M3 x / / T10 M3.5 x / / T15 M4 x / / T20 M5 x / / T20 M6 x / / T30 M8 x / / T40 M10 x / / T / / / / / / / / / / / 43.5 Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive ** ISO 7049 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Pan ead Metric - Type 23 M4 x 10MM S - PN ST - ength rive Series Finish ASME B18.6.5M** s eight ead iameter ength / / 4.2 ST ow Carbon Steel M2 x / / 3.7 M2.5 x / / 4.7 M3 x / / 5.3 M3.5 x / / 6.6 M4 x / / 7.6 M5 x / / 9.1 M6 x / / 11.5 M8 x / / 15.5 M10 x / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive S 118 ** ISO 1481 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

119 Machine Screw, Cutting 90 eg Flat ead Metric - Type 23 M4 x 10MM P - F ST - ength rive Series Finish ASME B18.6.5M** 90 EG s eight MAX / REF ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / T6 M2.5 x / T8 M3 x / T10 M3.5 x / T15 M4 x / T / / / / / 15.2 Finish - BK inc Black M5 x / T / 19.2 rive M6 x / T / 23.8 P M8 x / T / 28.8 S M10 x / T / 33.8 TX 6 - obe / 38.8 P Pozi / 43.5 * Same size for POI rive ** ISO 7050 / 1482 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Indented ex ead Metric - Type 23 M4 x 10MM P - INX ST - ength rive Series Finish s ASME B18.6.5M** eight Width Across Flats rive Size M2 x / / M2.5 x / / M3 x / / M3.5 x / / M4 x / / M5 x / / M6 x / / M8 x / / M10 x / / ength / / / / / / / / / / / / / 43.5 ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted ** ISO 1479 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. 119 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

120 Machine Screw, Cutting Indented ex Washer ead Metric - Type 23 M4 x 10MM P - INX - WA ST - ength rive Series Finish W s G eight MAX G Washer Outside iameter Width Across Flats W Washer Thickness rive Size ength / / 4.2 ST ow Carbon Steel M2 x / / / M2.5 x / / / M3 x / / / M3.5 x / / / M4 x / / / M5 x / / / M6 x / / / 1 3 M8 x / / / M10 x / / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Oval ead Metric - Type 23 M4 x 10MM P - OVA ST - ength rive Series Finish ASME B18.6.5M** 90 EG S s ead eight MAX ead iameter S ead Side eight MAX / REF rive Size ength / / 4.2 ST ow Carbon Steel M2 x / M2.5 x / M3 x / M3.5 x / M4 x / M5 x / M6 x / M8 x / M10 x / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S S - P - P Pozi 120 * Same size for POI rive ** ISO 7051 / 1483 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

121 Machine Screws, Cutting Metric - Type 1 Pan ead Machine Screw, Pan ead 122 Machine Screw, Pan ead 122 Flat ead Machine Screw, 90 eg Flat ead 123 ex ead Machine Screw, Indented ex ead 123 Machine Screw, Indented ex Washer ead 124 Special Use eads Machine Screw, Oval ead 124 Pan ead Page 122 Indented ex ead Page 123 Pan ead Page 122 Indented ex Washer ead Page eg Flat ead Page 123 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

122 Machine Screw, Cutting Pan ead Metric - Type 1 M4 x 10MM P - PN ST - ength rive Series Finish ASME B18.6.5M** s eight ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / / T6 M2.5 x / / T8 M3 x / / T10 M3.5 x / / T15 M4 x / / T20 M5 x / / T20 M6 x / / T30 M8 x / / T40 M10 x / / T / / / / / / / / / / / 43.5 Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive ** ISO 7049 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Pan ead Metric - Type 1 M4 x 10MM S - PN ST - ength rive Series Finish ASME B18.6.5M** s eight ead iameter ength / / 4.2 ST ow Carbon Steel M2 x / / 3.7 M2.5 x / / 4.7 M3 x / / 5.3 M3.5 x / / 6.6 M4 x / / 7.6 M5 x / / 9.1 M6 x / / 11.5 M8 x / / 15.5 M10 x / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive S 122 ** ISO 1481 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

123 Machine Screw, Cutting 90 eg Flat ead Metric - Type 1 M4 x 10MM P - F ST - ength rive Series Finish ASME B18.6.5M** 90 EG s eight MAX / REF ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / T6 M2.5 x / T8 M3 x / T10 M3.5 x / T15 M4 x / T / / / / / 15.2 Finish - BK inc Black M5 x / T / 19.2 rive M6 x / T / 23.8 P M8 x / T / 28.8 S M10 x / T / 33.8 TX 6 - obe / 38.8 P Pozi / 43.5 * Same size for POI rive ** ISO 7050 / 1482 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Indented ex ead Metric - Type 1 M4 x 10MM P - INX ST - ength rive Series Finish s ASME B18.6.5M** eight Width Across Flats rive Size M2 x / / M2.5 x / / M3 x / / M3.5 x / / M4 x / / M5 x / / ength / / / / / / / / 19.2 ST ow Carbon Steel Finish - BK inc Black P Passivate M6 x / / / 23.8 rive M8 x / / / 28.8 P M10 x / / / 33.8 S / 38.8 US Unslotted / 43.5 ** ISO 1479 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. 123 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

124 Machine Screw, Cutting Indented ex Washer ead Metric - Type 1 M4 x 10MM P - INX - WA ST - ength rive Series Finish W s G eight MAX G Washer Outside iameter Width Across Flats W Washer Thickness rive Size ength / / 4.2 ST ow Carbon Steel M2 x / / / M2.5 x / / / M3 x / / / M3.5 x / / / M4 x / / / M5 x / / / M6 x / / / 1 3 M8 x / / / M10 x / / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Cutting Oval ead Metric - Type 1 M4 x 10MM P - OVA ST - ength rive Series Finish ASME B18.6.5M** 90 EG S s ead eight MAX ead iameter S ead Side eight MAX / REF rive Size ength / / 4.2 ST ow Carbon Steel M2 x / M2.5 x / M3 x / M3.5 x / M4 x / M5 x / M6 x / M8 x / M10 x / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S S - P - P Pozi 124 * Same size for POI rive ** ISO 7051 / 1483 has slightly tighter tolerances. Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

125 Machine Screws, Forming Metric - Type TA Pan ead Machine Screw, Pan ead 126 Machine Screw, Pan ead 126 Flat ead Machine Screw, 90 eg Flat ead 127 ex ead Machine Screw, Indented ex ead 127 Machine Screw, Indented ex Washer ead 128 Special Use eads Machine Screw, Oval ead 128 Pan ead Page 126 Indented ex ead Page 127 Pan ead Page 126 Indented ex Washer ead Page eg Flat ead Page 127 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

126 Machine Screw, Forming Pan ead Metric - Type TA M4 x 10MM P - PN - TA - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / / T6 M2.5 x / / T8 M3 x / / T10 M3.5 x / / T15 M4 x / / T20 M5 x / / T20 M6 x / / T30 M8 x / / T40 M10 x / / T / / / / / / / / / / / 43.5 Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Forming Pan ead Metric - Type TA M4 x 10MM S - PN - TA - ST - ength rive Series Finish s eight ead iameter ength / / 4.2 ST ow Carbon Steel M2 x / / 3.7 M2.5 x / / 4.7 M3 x / / 5.3 M3.5 x / / 6.6 M4 x / / / / / / / 15.2 Finish - BK inc Black M5 x / / / 19.2 rive M6 x / / / 23.8 S M8 x / / / 28.8 M10 x / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

127 Machine Screw, Forming 90 eg Flat ead Metric - Type TA M4 x 10MM P - F - TA - ST - ength rive Series Finish 90 EG s eight MAX / REF ead iameter Cross Recess rive Size 6 - obe ength / / 4.2 ST ow Carbon Steel M2 x / T6 M2.5 x / T8 M3 x / T10 M3.5 x / T15 M4 x / T20 M5 x / T20 M6 x / T30 M8 x / T40 M10 x / T / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S TX 6 - obe P Pozi * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Forming Indented ex ead Metric - Type TA M4 x 10MM P - INX - TA - ST - ength rive Series Finish s eight Width Across Flats rive Size M2 x / / M2.5 x / / M3 x / / M3.5 x / / M4 x / / M5 x / / M6 x / / M8 x / / M10 x / / ength / / / / / / / / / / / / / 43.5 ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. 127 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

128 Machine Screw, Forming Indented ex Washer ead Metric - Type TA M4 x 10MM P - INX - WA - TA - ST - ength rive Series Finish W s G eight MAX G Washer Outside iameter Width Across Flats W Washer Thickness rive Size ength / / 4.2 ST ow Carbon Steel M2 x / / / M2.5 x / / / M3 x / / / M3.5 x / / / M4 x / / / M5 x / / / M6 x / / / 1 3 M8 x / / / M10 x / / / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. Machine Screw, Forming Oval ead Metric - Type TA M4 x 10MM P - OVA - TA - ST - ength rive Series Finish 90 EG S s ead eight MAX ead iameter S ead Side eight MAX / REF rive Size ength / / 4.2 ST ow Carbon Steel M2 x / M2.5 x / M3 x / M3.5 x / M4 x / M5 x / M6 x / M8 x / M10 x / / / / / / / / / / / / 43.5 Finish - BK inc Black rive P S S - P - P Pozi 128 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

129 Socket Screws Metric Type SOC Shoulder Screws Socket ead Cap Screw 130 Flat Countersunk ead Cap Screw 130 Button ead Cap Screw 131 Socket ead Cap Screw Page 130 Flat Countersunk ead Cap Screw Page 130 Button ead Cap Screw Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

130 Socket Screws Socket ead Cap Screw Metric M4 x 10MM SOC - CAP - SC - AY - ength Series Finish K s J eight ead iameter J exagon Socket Size NOM K Key Engagement MIN ength / / 4.7 AY Alloy Steel M1.6 x / / M2 x / / M2.5 x / / M3 x / / M4 x / / / / / / / 15.7 Finish BK - OX Black Oxide M5 x / / / 19.6 rive M6 x / / / 24.6 SOC ex Socket M8 x / / / 29.6 M10 x / / / / / 44.6 * Contact PENCOM for more information on ISO, IN, and JIS standards. Socket Screws Flat Countersunk ead Cap Screw Metric K s M4 x 10MM SOC - F - CAP - SC - AY - ength Series Finish 90 EG J eight REF ead iameter J exagon Socket Size NOM K Key Engagement MIN ength / / 4.7 AY Alloy Steel M3 x / M4 x / M5 x / M6 x / M8 x / M10 x / M12 x / M16 x / / / / / / / / / / / / 44.6 Finish BK - OX Black Oxide rive SOC ex Socket 130 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

131 Socket Screws Button ead Cap Screw Metric M4 x 10MM SOC - BUT - CAP - SC - AY - ength Series Finish K s J eight ead iameter J exagon Socket Size NOM K Key Engagement MIN ength / / 4.7 AY Alloy Steel M3 x / / M4 x / / M5 x / / M6 x / / M8 x / / M10 x / / M12 x / / M16 x / / / / / / / / / / / / / 44.6 Finish BK - OX Black Oxide rive SOC ex Socket * Contact PENCOM for more information on ISO, IN, and JIS standards. 131 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

132 Notes 132 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

133 Precision Shoulder Screw Metric Type PS Precision Shoulder Screws Precision ead Shoulder Screw 134 Precision Socket ead Shoulder Screw 135 Precision ead Shoulder Screw 136 Precision ead Shoulder Screw Page 134 Precision Socket ead Shoulder Screw Page 135 Precision ead Shoulder Screw Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

134 Shoulder Screw Precision Shoulder Screw ead Metric E s 3.18 x M3 x 4 - P - CAP - PS - SC - AY - Shoulder ength Basic Shoulder iameter rive ength Series Finish F eight ±0.25 ead iameter ±0.1 F ength ±0.13 E Basic Shoulder iameter rive Size AY Alloy Steel M3 x M3.5 x M4 x M5 x M6 x M6 x Finish - BK inc Black rive P Shoulder ength M3 x 0.5 M3.5 x 0.6 M4 x 0.7 M5 x 0.8 M6 x * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

135 Shoulder Screw Precision Shoulder Screw Socket ead Metric E s 3.18 x M3 x 4 - P - SOC - CAP - PS - SC - AY - Shoulder ength Basic Shoulder iameter rive Series Finish ength J F eight ±0.25 ead iameter ±0.1 F ength ±0.13 E Basic Shoulder iameter J rive ex AY Alloy Steel M3 x M3.5 x M4 x M5 x M6 x Finish - BK inc Black M6 x rive SOC ex Socket Shoulder ength M3 x 0.5 M3.5 x 0.6 M4 x 0.7 M5 x 0.8 M6 x * Contact PENCOM for more information on ISO, IN, and JIS standards. 135 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

136 Shoulder Screw Precision ead Shoulder Screw Metric E s 3.18 x M3 x 4 - P - S - CAP - PS - SC - AY - Shoulder ength Basic Shoulder iameter rive ength Series Finish F eight ±0.25 ead iameter ±0.1 F ength ±0.13 E Basic Shoulder iameter AY Alloy Steel M3 x M3.5 x M4 x M5 x M6 x Finish BK - OXI Black Oxide M6 x rive S Shoulder ength M3 x 0.5 M3.5 x 0.6 M4 x 0.7 M5 x 0.8 M6 x * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

137 Sheet Metal Screws, Forming Metric - Type B Pan ead Sheet Metal Screw, Pan ead 138 Sheet Metal Screw, Pan ead 138 Flat ead Sheet Metal Screw, 90 eg Flat ead 139 ex ead Sheet Metal Screw, Indented ex ead 139 Sheet Metal Screw, Indented ex Washer ead 140 Special Use eads Sheet Metal Screw, Oval ead 140 Pan ead Page 138 Indented ex ead Page 139 Pan ead Page 138 Indented ex Washer ead Page eg Flat ead Page 139 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

138 Sheet Metal Screw, Forming Pan ead Metric - Type B M2.2 x 4.5MM P - PN - B - ST - ength rive Series Finish s ISO 7049 eight ead iameter Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / / T6 M2.9 x / / T10 M3.5 x / / T15 M4.2 x / / T20 M4.8 x / / T25 M5.5 x / / T25 M6.3 x / / T30 M8 x / / T40 M9.5 x / / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Forming Pan ead Metric - Type B M2.2 x 4.5MM S - PN - B - ST - ength rive Series Finish s ISO 1481 eight ead iameter ength / / 5.7 ST ow Carbon Steel M2.2 x / / 3.7 M2.9 x / / 5.3 M3.5 x / / 6.6 M4.2 x / / 7.6 M4.8 x / / 9.1 M5.5 x / / 10.6 M6.3 x / / 11.6 M8 x / / 15.6 M9.5 x / / / / / / / / / / / / 48.7 Finish - BK inc Black rive S 138 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

139 Sheet Metal Screw, Forming 90 eg Flat ead Metric - Type B M2.2 x 4.5MM P - F - B - ST - ength rive Series Finish ISO EG s eight REF ead iameter Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / T6 M2.9 x / T10 M3.5 x / T15 M4.2 x / 8 2 T20 M4.8 x / T25 M5.5 x / T25 M6.3 x / T30 M8 x / T40 M9.5 x / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Forming Indented ex ead Metric - Type B M2.2 x 4.5MM P - INX - B - ST - ength rive Series Finish s ISO 1479 eight Width Across Flats rive Size M2.2 x / / M2.9 x / 2 5 / M3.5 x / / M4.2 x / / M4.8 x / / M5.5 x / / M6.3 x / / M8 x / / M9.5 x / / ength / / / / / / / / / / / / 48.7 ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. 139 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

140 Sheet Metal Screw, Forming Indented ex Washer ead Metric - Type B M2.9 x 6.5MM P - INX - WA - B - ST - ength rive Series Finish W s IN 6928 G eight MAX G Washer Outside iameter W Washer Thickness MIN Width Across Flats rive Size ength / / 8.7 ST ow Carbon Steel M2.9 x / / M3.5 x / / M3.9 x / / M4.2 x / / M4.8 x / / M5.5 x / / M6.3 x / / M8 x / / / / / / / / / / / 48.7 Finish - BK inc Black rive P S * Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Forming Oval ead Metric - Type B S s M2.2 x 6.5MM P - OVA - B - ST - ength rive Series Finish ISO EG eight ead iameter S ead eight REF Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / T6 M2.9 x / T10 M3.5 x / T15 M4.2 x / T20 M4.8 x / T25 M5.5 x / T25 M6.3 x / T30 M8 x / T40 M9.5 x / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe 140 * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

141 Sheet Metal Screws, Forming Metric - Type AB Pan ead Sheet Metal Screw, Pan ead 142 Sheet Metal Screw, Pan ead 142 Flat ead Sheet Metal Screw, 90 eg Flat ead 143 ex ead Sheet Metal Screw, Indented ex ead 143 Sheet Metal Screw, Indented ex Washer ead 144 Special Use eads Sheet Metal Screw, Oval ead 144 Pan ead Page 142 Indented ex ead Page 143 Pan ead Page 142 Indented ex Washer ead Page eg Flat ead Page 143 Oval ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

142 Sheet Metal Screw, Forming Pan ead Metric - Type AB M2.2 x 4.5MM P - PN - AB - ST - ength rive Series Finish s ISO 7049 eight ead iameter Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / / T6 M2.9 x / / T10 M3.5 x / / T15 M4.2 x / / T20 M4.8 x / / T25 M5.5 x / / T25 M6.3 x / / T30 M8 x / / T40 M9.5 x / / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Forming Pan ead Metric - Type AB M2.2 x 4.5MM S - PN - AB - ST - ength rive Series Finish s ISO 1481 eight ead iameter ength / / 5.7 ST ow Carbon Steel M2.2 x / / 3.7 M2.9 x / / 5.3 M3.5 x / / 6.6 M4.2 x / / 7.6 M4.8 x / / 9.1 M5.5 x / / 10.6 M6.3 x / / 11.6 M8 x / / 15.6 M9.5 x / / / / / / / / / / / / 48.7 Finish - BK inc Black rive S 142 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

143 Sheet Metal Screw, Forming 90 eg Flat ead Metric - Type AB M2.2 x 4.5MM P - F - AB - ST - ength rive Series Finish ISO EG s eight ead iameter Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / T6 M2.9 x / T10 M3.5 x / T15 M4.2 x / 8 2 T20 M4.8 x / T25 M5.5 x / T25 M6.3 x / T30 M8 x / T40 M9.5 x / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Forming Indented ex ead Metric - Type AB M2.2 x 4.5MM P - INX - AB - ST - ength rive Series Finish s ISO 1479 eight Width Across Flats rive Size M2.2 x / / M2.9 x / 2 5 / M3.5 x / / M4.2 x / / M4.8 x / / M5.5 x / / M6.3 x / / M8 x / / M9.5 x / / ength / / / / / / / / / / / / 48.7 ST ow Carbon Steel Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. 143 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

144 Sheet Metal Screw, Forming Indented ex Washer ead Metric - Type AB M2.9 x 6.5MM P - INX - WA - AB - ST - ength rive Series Finish W s IN 6928 G eight MAX G Washer Outside iameter W Washer Thickness MIN Width Across Flats rive Size ength / / 8.7 ST ow Carbon Steel M2.9 x / / M3.5 x / / M3.9 x / / M4.2 x / / M4.8 x / / M5.5 x / / M6.3 x / / M8 x / / / / / / / / / / / 48.7 Finish - BK inc Black rive P S * Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Forming Oval ead Metric - Type AB M2.2 x 4.5MM P - OVA - AB - ST - ength rive Series Finish ISO EG S s eight ead iameter S ead eight REF Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / T6 M2.9 x / T10 M3.5 x / T15 M4.2 x / T20 M4.8 x / T25 M5.5 x / T25 M6.3 x / T30 M8 x / T40 M9.5 x / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe 144 * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

145 Sheet Metal Screws, Cutting Metric - Type 25 Pan ead Sheet Metal Screw, Pan ead 146 Sheet Metal Screw, Pan ead 146 Flat ead Sheet Metal Screw, 90 eg Flat ead 147 ex ead Sheet Metal Screw, Indented ex Washer ead 147 Pan ead Page 146 Pan ead Page eg Flat ead Page 147 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

146 Sheet Metal Screw, Cutting Pan ead Metric - Type 25 M2.2 x 4.5MM P - PN ST - ength rive Series Finish ISO 7049 s eight ead iameter Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / / T6 M2.9 x / / T10 M3.5 x / / T15 M4.2 x / / T20 M4.8 x / / T25 M5.5 x / / T25 M6.3 x / / T30 M8 x / / T40 M9.5 x / / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Cutting Pan ead Metric - Type 25 M2.2 x 4.5MM S - PN ST - ength rive Series Finish ISO 1481 s eight ead iameter ength / / 5.7 ST ow Carbon Steel M2.2 x / / 3.7 M2.9 x / / 5.3 M3.5 x / / 6.6 M4.2 x / / 7.6 M4.8 x / / 9.1 M5.5 x / / 10.6 M6.3 x / / 11.6 M8 x / / 15.6 M9.5 x / / / / / / / / / / / / 48.7 Finish - BK inc Black rive S 146 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

147 Sheet Metal Screw, Cutting 90 eg Flat ead Metric - Type 25 M2.2 x 4.5MM P - F ST - ength rive Series Finish ISO EG s eight ead iameter Cross Recess rive Size 6 - obe ength / / 5.7 ST ow Carbon Steel M2.2 x / T6 M2.9 x / T10 M3.5 x / T15 M4.2 x / 8 2 T20 M4.8 x / T25 M5.5 x / T25 M6.3 x / T30 M8 x / T40 M9.5 x / T / / / / / / / / / / 48.7 Finish - BK inc Black rive P P Pozi TX 6 - obe * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Cutting Indented ex Washer ead Metric - Type 25 M2.2 x 4.5MM P - INX - WA ST - ength rive Series Finish W s IN 6928 G eight MAX G Washer Outside iameter W Washer Thickness MIN Width Across Flats rive Size ength / / 8.7 ST ow Carbon Steel M2.9 x / / M3.5 x / / M3.9 x / / M4.2 x / / M4.8 x / / M5.5 x / / M6.3 x / / M8 x / / / / / / / / / / / 48.7 Finish - BK inc Black rive P S * Contact PENCOM for more information on ISO, IN, and JIS standards. 147 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

148 Notes 148 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

149 Sheet Metal Screws, Self rilling Metric - Type TEK2 Pan ead Sheet Metal Screw, Pan ead 150 Flat ead Sheet Metal Screw, 90 eg Flat ead 150 ex ead Sheet Metal Screw, Indented ex Washer ead 151 Pan ead Page eg Flat ead Page 150 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

150 Sheet Metal Screw, Self rilling Pan ead Metric - Type TEK2 M2.9 x 9.5MM P - PN - TEK2 - ST - ength rive Series Finish EN ISO s eight ead iameter Cross Recess rive Size 6 - obe ength / / 12.1 ST ow Carbon Steel M2.9 x / / T6 M3.5 x / / T10 M4.2 x / / T15 M4.8 x / / T20 M5.5 x / / T25 M6.3 x / / T / / / / / / / / Finish - BK inc Black rive P P Pozi TX 6 - obe * * Same size for POI rive Contact PENCOM for more information on ISO, IN, and JIS standards. Sheet Metal Screw, Self rilling 90 eg Flat ead Metric - Type TEK2 M2.9 x 13MM P - F - TEK2 - ST - ength rive Series Finish 90 EG s eight MAX ead iameter Cross Recess rive Size 6 - obe ength / / 15.1 ST ow Carbon Steel M2.9 x / T / 18 M3.5 x / T / 21 Finish M4.2 x / T / 24 - BK inc Black M4.8 x / T / M5.5 x / T / M6.3 x / T / rive / P P Pozi TX 6 - obe 150 * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

151 Sheet Metal Screw, Self rilling Indented ex Washer ead Metric - Type TEK2 M2.9 x 9.5MM P - INX - WA - TEK2 - ST - ength rive Series Finish W s G eight G Washer Outside iameter Width Across Flats W Washer Thickness ength / / 12.1 ST ow Carbon Steel M2.9 x / / / M3.5 x / / / M4.2 x / / / M4.8 x / / / M5.5 x / / / / / / / / Finish - BK inc Black M6.3 x / / / / rive / P / S * Contact PENCOM for more information on ISO, IN, and JIS standards. 151 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

152 Notes 152 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

153 Screws For Plastic, Forming Metric - Type PF Pan ead Screws For Plastic, Pan ead 154 Flat ead Screws For Plastic, 90 eg Flat ead 154 ex ead Screws For Plastic, Indented ex ead 155 Screws For Plastic, Indented ex Washer ead 155 Pan ead Page eg Flat ead Page 154 Indented ex ead Page 155 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

154 Screws For Plastic, Forming Pan ead Metric - Type PF K22 x 10MM P - PN - PF - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength / / 6.55 ST ow Carbon Steel K / / K / / K / / T6 K / / T7 K / / T10 K / / T10 K / / T20 K / / T20 K / / T25 K / / T / / / / / / / / / / / Finish - BK inc Black rive P TX 6 - obe S - P - S - TX obe * Contact PENCOM for more information on ISO, IN, and JIS standards. Screws For Plastic, Forming 90 eg Flat ead Metric - Type PF K22 x 10MM P - F - PF - ST - ength rive Series Finish 90 EG s ead iameter Cross Recess rive Size 6 - obe ength / / 6.55 ST ow Carbon Steel K / T6 K / T8 K / T8 K / T15 K / T / / / / / Finish - BK inc Black K / T / rive K / T / P K / T / TX 6 - obe / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

155 Screws For Plastic, Forming Indented ex ead Metric - Type PF K22 x 10MM P - INX - PF - ST - ength rive Series Finish s eight Width Across Flats REF ength / / 6.55 ST ow Carbon Steel K / K / K / K / K / K / K / K / / / / / / / / / / / / Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. Screws For Plastic, Forming Indented ex Washer ead Metric - Type PF W s K22 x 10MM P- INX - WA - PF - ST - ength rive Series Finish G eight G Washer Outside iameter Width Across Flats REF W Washer Thickness REF ength / / 6.55 ST ow Carbon Steel K / K / K / K / K / K / K / / / / / / / / / / / / Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. 155 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

156 Notes 156 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

157 Sheet For Plastic, Forming Metric - Type Pan ead Screws For Plastic, Pan ead 158 Screws For Plastic, Pan ead 158 Flat ead Screws For Plastic, 90 eg Flat ead 159 ex ead Screws For Plastic, Indented Washer ex ead 159 Pan ead Page 158 Pan ead Page eg Flat ead Page 159 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

158 Screws For Plastic, Forming Pan ead Metric - Type M3.5 x 10MM P - PN - - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength / / 8.8 ST ow Carbon Steel M3.5 x / / T10 M4.0 x / / T10 M4.2 x / / T15 M4.8 x / / T20 M5.3 x / / T20 M5.5 x / / T20 M6.0 x / / T25 M6.3 x / / T30 M7.2 x / / T30 M7.5 x / / T40 M8 x / / T / / / / / / / / / / / 58.4 Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Screws For Plastic, Forming Pan ead Metric - Type M3.5 x 10MM S - PN - - ST - ength rive Series Finish s eight ead iameter ength / / 8.8 ST ow Carbon Steel M3.5 x / / 6.10 M4.0 x / / 6.50 M4.2 x / / 6.50 M4.8 x / / 7.77 M5.3 x / / 9.07 M5.5 x / / 9.07 M6.0 x / / M6.3 x / / M7.2 x / / M7.5 x / / M8 x / / / / / / / / / / / / / 58.4 Finish - BK inc Black rive S 158 * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

159 Screws For Plastic, Forming 90 eg Flat ead Metric - Type M3.5 x 10MM P - F - - ST - ength rive Series Finish 90 EG s eight REF ead iameter Cross Recess rive Size 6 - obe ength / / 8.8 ST ow Carbon Steel M3.5 x / T10 M4.0 x / T10 M4.2 x / T15 M4.8 x / T20 M5.3 x / T20 M5.5 x / T20 M6.0 x / T25 M6.3 x / T30 M7.2 x / T30 M7.5 x / T40 M8 x / T / / / / / / / / / / / 58.4 Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Screws For Plastic, Forming Indented ex Washer ead Metric - Type M3.5 x 10MM P - INX - WA - - ST - ength rive Series Finish W s G eight G Washer Outside iameter Width Across Flats W Washer Thickness ength / / 8.8 ST ow Carbon Steel M3.5 x / / / /.38 M4.0 x / / / /.38 M4.2 x / / / /.38 M4.8 x / / / /.48 M5.3 x / / / /.48 M5.5 x / / / /.56 M6.0 x / / / /.56 M6.3 x / / / /.76 M7.2 x / / / /.76 M7.5 x / / / /.76 M8 x / / / / / / / / / / / / / / / 58.4 Finish - BK inc Black rive P S US Unslotted * Contact PENCOM for more information on ISO, IN, and JIS standards. 159 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

160 Notes 160 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

161 Sheet For Plastic, Forming Metric - Type PAST 48/2 Pan ead Screws For Plastic, Pan ead 162 Screws For Plastic, Pan ead 162 Flat ead Screws For Plastic, 90 eg Flat ead 163 ex ead Screws For Plastic, Indented ex Washer ead 163 Pan ead Page 162 Pan ead Page eg Flat ead Page 163 Indented ex Washer ead Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

162 Screws For Plastic, Forming Pan ead Metric - Type PAST 48/2 M2.2 x 4.5MM P - PN - PAST 48/2 - ST - ength rive Series Finish s eight ead iameter Cross Recess rive Size 6 - obe ength M2.2 thru M6.3 M8 & M9.5 ST ow Carbon Steel M2.2 x / / T6 M2.9 x / / T6 M3.5 x / / 6 2 T15 M4.2 x / / T20 M4.8 x / / T25 M5.5 x / / T25 M6.3 x / / T30 M8 x / / T40 M9.5 x / / T / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Screws For Plastic, Forming Pan ead Metric - Type PAST 48/2 2.2 x 4.5 S - PN - PAST 48/2 - ST - ength rive Series Finish s eight ead iameter ength M2.2 thru M6.3 M8 & M9.5 ST ow Carbon Steel M2.2 x / / 3.7 M2.9 x / / 5.3 M3.5 x / / 6.6 M4.2 x / / 7.6 M4.8 x / / / / / / / / Finish - BK inc Black M5.5 x / / / / rive M6.3 x / / / / S M8 x / / / / M9.5 x / / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

163 Screws For Plastic, Forming 90 eg Flat ead Metric - Type PAST 48/2 M2.2 x 4.5MM P - F - PAST 48/2 - ST - ength rive Series Finish 90 EG s eight ead iameter Cross Recess rive Size 6 - obe ength M2.2 thru M6.3 M8 & M9.5 ST ow Carbon Steel M2.2 x / T6 M2.9 x / T10 M3.5 x / T15 M4.2 x / T20 M4.8 x / T25 M5.5 x / T25 M6.3 x / T30 M8 x / T40 M9.5 x / T / / / / / / / / / / / / / / / / / / / / Finish - BK inc Black rive P TX 6 - obe P Pozi * Same size for POI rive * Contact PENCOM for more information on ISO, IN, and JIS standards. Screws For Plastic, Forming Indented ex Washer ead Metric - Type Plast 48 / 2 W s M2.2 x 4.5MM P - INX - WA - PAST 48/2 - ST - ength rive Series Finish G eight Max. G Washer Outside iameter W Washer Thickness Min. Width Across Flats rive Size Cross Recess M2.2 x / / M2.9 x / / M3.5 x / / M4.2 x / / M4.8 x / / ength M2.2 thru M6.3 M8 & M / / / / / / ST ow Carbon Steel Finish - BK inc Black M5.5 x / / / / rive M6.3 x / / / / P M8 x / / / / S M9.5 x / / / / US Unslotted / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. 163 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

164 Notes 164 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

165 Nuts Metric Nuts ex Nuts - Style ex Nuts - Style ex Jam Nuts 167 KPS Nuts 167 Conical Washer KPS Nuts 168 ex Flange Nuts 168 Prevailing-Torque ex Nuts 169 Prevailing-Torque Flange Nuts 169 Cap Nuts 170 Cage Nuts 171 Nylon Insert ocknuts 172 Jam Nylon Insert ocknuts 172 ex Nuts - Style 1 Page 166 Conical Washer KPS Nuts Page 168 Cap Nuts Page 170 ex Nuts - Style 2 Page 166 ex Flange Nuts Page 168 Cage Nuts Page 171 ex Jam Nuts Page 167 Prevailing-Torque ex Nuts Page 169 Nylon Insert ocknuts - Regular Pattern Page 172 KPS Nuts Page 167 Prevailing-Torque Flange Nuts Page 169 Nylon Insert ocknuts - eavy Pattern Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

166 Nuts ex Nut - Style 1 Metric M3 X - STYE1 - NU - C5 - - IFI Series Finish Standard T ASME B M T Thickness Width Across Flats C5 Class 5 Steel M1.6 x / / 3.02 M2 x / / 3.82 M2.5 x / / 4.82 C10 Finish Class 10 Steel M3 x / / 5.32 M3.5 x / / 5.82 M4 x / / 6.78 M5 x / / 7.78 M6 x / / 9.78 M8 x / / M10 x / / Technical ata: Property Condition Style of ex Nut Mating with Property Class C5 Non-eat Treated 5.8, 4.8 and 4.6 Style 1 C10 eat Treated 10.9, 9.8, 5.8, 4.8 and 4.6 * Contact PENCOM for more information on ISO, IN, and JIS standards. Nuts ex Nut - Style 2 Metric M3.5 X - STYE2 - NU - C9 - - IFI Series Finish Standard T ASME B M T Thickness Width Across Flats C9 Class 9 Steel M3 x / / 5.32 M3.5 x / / 5.83 M4 x / / 6.78 M5 x / / 7.78 C12 Finish Class 12 Steel M6 x / / 9.78 M8 x / / M10 x / / M12 x / / M14 x / / M16 x / / Technical ata: Property Condition Style of ex Nut Mating with Property Class C9 Non-eat Treated 9.8, 8.8, 4.8 and 4.6 Style 2 C12 eat Treated 12.9, 10.9, 9.8, 8.8, 5.8, 48 and * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

167 Nuts ex Jam Nut Metric M3 X - JAM - NU - ST - - IFI Series Finish Standard T ASME B M T Thickness Width Across Flats Finish M5 x / / 7.78 M6 x / / 9.78 M8 x / / M10 x / / M12 x / / M14 x / / M16 x / / C4 C5 Technical ata: Class 4 Steel Class 5 Steel M20 x / / M24 x / / M30 x / / Property Condition C4 Class 4 Steel Non-eat Treated C5 Class 5 Carbon or Alloy Steel eat Treated * Contact PENCOM for more information on ISO, IN, and JIS standards. Nuts KPS Nut Metric M3 KPS - NU - ST - Series Finish T W T Thickness iameter W Washer Thickness Width Across Flats Finish ST ow Carbon Steel M3 x M4 x M5 x M6 x M8 x M10 x * Contact PENCOM for more information on ISO, IN, and JIS standards. 167 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

168 Nuts Conical Washer KPS Nut Metric M3 KPS - NU - CON - WA - ST - - IFI Series Finish Standard T M G Thickness REF G Washer Outside iameter REF M Flange Thickness REF Width Across Flats REF ST ow Carbon Steel M4 x M5 x M6 x M8 x M10 x Finish - BK inc Black M12 x * Contact PENCOM for more information on ISO, IN, and JIS standards. Nuts ex Flange Nut Metric M3 X - FANGE - NU - ST - - IFI Series Finish Standard T ANSI B M T Thickness iameter MAX Width Across Flats ST ow Carbon Steel M5 x / / 7.78 M6 x / / 9.78 M8 x / / M10 x / / Finish M12 x / / M14 x / / M16 x / / M20 x / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

169 Nuts Prevailing-Torque ex Nut Metric - Steel Property Class 5 and 9 M3 X - PREV - TORQ - ST - - IFI Series Finish Standard T ASME B M T Thickness Width Across Flats 1st Install. Max Prevailing-Torque, N-M (in. lb) Classes 5 and 9 1st Removal MIN 5th Removal MIN C5 Class 5 Steel - Not eat Treated M3 x / / (3.81) 0.12 (1.06) 0.08 (0.71) C9 Class 9 Steel - Optional eat Treating M4 x / / (7.97) 0.18 (1.59) 0.12 (1.06) M5 x / / (14.16) 0.29 (2.57) 0.20 (1.77) M6 x / / (26.55) 0.45 (3.98) 0.30 (2.66) M8 x / / (61.96) 0.85 (7.52) 0.60 (5.31) Finish M10 x / / (92.93) 1.5 (13.28) 1.0 (8.85) M12 x / / (137.18) 2.3 (20.36) 1.6 (14.16) M14 x / / (212.41) 3.3 (29.21) 2.3 (20.36) M16 x / / (283.22) 4.5 (39.83) 3.0 (26.55) M20 x / / (477.94) 7.5 (66.38) 5.3 (46.91) M24 x / / (708.05) 16.5 (101.78) 8.0 (70.81) * Contact PENCOM for more information on ISO, IN, and JIS standards. Nuts Prevailing -Torque Flange Nut Metric - Steel Property Class 5 and 9 T M3 PREV - TORQ - FANGE - ST - - IFI Series Finish Standard ASME B M T Thickness Flange iameter Width Across Flats 1st Install. MAX Prevailing-Torque, N-M (in. lb) Classes 5 and 9 1st Removal MIN 5th Removal MIN M6 x / / M8 x / / M10 x / / M12 x / / M14 x / / ST ow Carbon Steel Finish - BK inc Black M16 x / / M20 x / / * Contact PENCOM for more information on ISO, IN, and JIS standards. 169 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

170 Nuts Cap Nut Metric M3 X - CAP - NU - ST - - IN 1587 Series Finish Standard R IN 1587 eight REF R eight REF Width Across Flats REF ST ow Carbon Steel M3 x M4 x M5 x M6 x Finish M8 x M10 x M12 x M16 x M20 x M24 x * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

171 Nuts Cage Nut Metric M5 CAGE - NU - ST - Series Finish F B E A S C M3 x 0.5 M4 x 0.7 F Sheet Thickness A ± B ± C ± E ± S G ± ole ole No ST ow Carbon Steel Finish - BK inc Black M5 x 0.8 M6 x 1 M8 x 1.25 M10 x Assembly / Application Guideline Insert one end of the cage nut into the hole so that it clips around the edge. Push the other end in, making sure the cage lip catches. * Contact PENCOM for more information on ISO, IN, and JIS standards. 171 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

172 Nuts Nylon Insert ocknut - Regular Pattern Metric M5 REG - X - NY - IN - K - NU - C8 - Series Finish T S T Thickness Width Across Flats S Wrenching eight MIN C8 Class 8 Carbon Steel M3 x / / Finish M4 x / / M5 x / / M6 x / / M8 x / / M10 x / / M12 x / / M16 x / / M20 x / / M24 x / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Nuts Nylon Insert ocknut - eavy Pattern Metric M5 VY - X - NY - IN - K - NU - C8 Series T S T Thickness Width Across Flats S Wrenching eight MIN C9 Class 9 Carbon Steel M5 x / / M6 x / / M8 x / / Finish M10 x / / M12 x / / M16 x / / M20 x / / M24 x / / M30 x / / M36 x / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

173 Washers Metric Washers ock Washer, External Tooth 174 ock Washer, Internal Tooth 175 ock Washer, Internal External Tooth 176 Plain Washer 177 Plain Washer - Product Grade A 178 ock Washer, Split ock Washer 179 ock Washer, External Tooth Page 174 Plain Washer Page 177 ock Washer, Internal Tooth Page 175 Plain Washer - Product Grade A Page 178 ock Washer, Internal External Tooth Page 176 ock Washer, Split ock Washer Page Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

174 Washer ock Washer - External Tooth Metric M1.7 EXT - K - WA - ST - - IN I / 3.3 O / 0.3 TK Nominal Series Finish Inside Outside Thickness Washer iameter iameter Size IN 6797 A B T Nominal Washer Size T Thickness MIN / A Inside iameter Inside iameter B Outside iameter Outside iameter ST ow Carbon Steel / / / / / / / / Finish / / / / / / / / / / / / / / / / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

175 Washer ock Washer - Type Internal Tooth Metric - Type WA M1.7 INT - K - WA - ST - - IN I / 3.3 O / 0.3 TK Nominal Series Finish Inside Outside Thickness Washer iameter iameter Size IN 6797 A B T Nominal Washer Size T Thickness MIN / A Inside iameter Inside iameter B Outside iameter Outside iameter ST ow Carbon Steel / / / / / / / / Finish / / / / / / / / / / / / / / / / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. 175 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

176 Washer ock Washer - Internal External Tooth Metric M4 - INT/EXT - K - WA - ST - - IFI I / 14.5 O / 0.56 TK Nominal Series Finish Inside Outside Thickness Washer iameter iameter Size JIS B 1255 A B T Nominal Washer Size T Thickness Thickness A Inside iameter Inside iameter B Outside iameter Outside iameter ST ow Carbon Steel / / / / / / / / / / / / Finish / / / / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

177 Washer Plain Washer Metric M2.5 - F - WA - ST - - A - IN I / 6.00 O / 0.50 TK Nominal Series Finish Inside Outside Thickness Washer iameter iameter Size IN 125 A B T Nominal Washer Size T Thickness Thickness A Inside iameter Inside iameter B Outside iameter Outside iameter / / / / / / / / / / / / ST ow Carbon Steel Finish / / / / / / / / / / / / / / / / / / / / / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. 177 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

178 Washer Plain Washer - Narrow, Regular, Wide Metric M1.6 NAR - F - WA - ST - - IFI I / 3.85 O / 0.70 TK Nominal Type Series Finish Inside Outside Thickness Washer iameter iameter Size ANSI B18.22M A A A B T B T B T Narrow Regular Wide Nominal Washer Size Type Type T Thickness Thickness A Inside iameter Inside iameter B Outside iameter Outside iameter ST ow Carbon Steel Narrow Regular Wide Narrow Regular Wide NAR REG WIE NAR REG WIE 0.70 / / / / / / / / / / / / / / / / / / Finish 2.5 Narrow Regular Wide NAR REG WIE 0.90 / / / / / / / / / Narrow Regular Wide NAR REG WIE 0.90 / / / / / / / / / Narrow Regular Wide NAR REG WIE 1.20 / / / / / / / / / Narrow Regular Wide NAR REG WIE 1.20 / / / / / / / / / Narrow Regular Wide NAR REG WIE 1.40 / / / / / / / / / Narrow Regular Wide NAR REG WIE 1.75 / / / / / / / / / Narrow Regular Wide NAR REG WIE 2.30 / / / / / / / / / Narrow Regular Wide NAR REG WIE 2.30 / / / / / / / / / Narrow Regular Wide NAR REG WIE 2.80 / / / / / / / / / Narrow Regular Wide NAR REG WIE 2.80 / / / / / / / / / Narrow Regular Wide NAR REG WIE 3.50 / / / / / / / / / Narrow Regular Wide NAR REG WIE 4.00 / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

179 Washer ock Washer - Split ock Washer Metric M2.5 - SPT - K - WA - ST - - IN I / 3.85 O / 0.70 TK Nominal Washer Size Series Finish Inside iameter Outside iameter Thickness IN 127 A B T Nominal Washer Size T Thickness Thickness A Inside iameter Inside iameter B Outside iameter MAX ST ow Carbon Steel / / / / / / / / Finish / / / / / / / / / / / / / / / / / / / / * Contact PENCOM for more information on ISO, IN, and JIS standards. 179 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: SAES@PENCOMSF.COM WEB:

180 Notes 180 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

181 Notes 181 Screw_Book_REV_ INUSTRIA R., STE. 21, SAN CAROS, CA P: F: EMAI: WEB:

182 Manufactured globally, supplied locally For inquiries please contact: or visit our website at PENCOM 2013 P_Screw_Book_REV_004_03_25_13