INCH-POUND MS19D April 199 Superseding MS19C 18 July 198 MILITARY SPECIFICATION SHEET SCREW, MACHINE, PAN HEAD, CROSS-RECESSED, CORROSION RESISTANT STEEL, UNC-A This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and the issue of the following specification listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation: FF-S-9. D Entire document revised AMSC N/A 1 of FSC 0 DISTRIBUTION STATEMENT A. Approve for public release; distribution is unlimited.
Table I. Dimensions and Numbers. D Nominal Size.080.110.180.10.1900.00.1.0 Threads Per Inch UNC-A 0 0 18 1 D 1 Body Diameter A Head Diameter H Head Height REQUIREMENTS: Max Min Max Min Max Min.080.01.10.10.00.00.110.09.190.00.0800.000.180.111.00.0.090.080.10.199.0.00.110.100.1900.18.0.0.10.10.00.1.90.0.10.10.1.1.10.90.180.00.0.8.00.10.10.0 P Head Radius Ref.0100.0100.010.010.000.00.000.000 R Fillet Radius Max.010.010.010.00.090.080.00.00 Driver Size 1 1 Tensile Strength Lbs-Min 00 80 0 1,10 1,00,0,190,00 L Length Tolerance.1 1 11 9.188 1 0 8 1/.0 1 1 9.1 1 0. 1 8 1 9.8 +0 1 9 8 9.00 -.01 1 0 9 9 10. 11 10 1 1 19 1 1 18. 8 18 1 80 9 108.0 9 19 81 9 109.8 10 0 8 8 9 110 1.000 1 1 9 8 98 111 1.1 11 1 1 10 1 1 19 1.0 1/ 0 8 8 99 11 1. +0 1 1 18 11 1 1 10 1.00 -.0 1 9 8 100 11 1.0 0 8 101 11.000 8 1 8 10 11.0 88 10 11.00 +0 89 10 11.0 -.09 1/ 90 1/ 10 1/ 118.000 1/ 91 1/ 10 1/ 119 1/ Indicates manufacturer s non-stock production items Inactive for new design after 18 July 198 1. MATERIAL: Austenitic Corrosion-Resistant Steel screws shall be manufactured from Type 0 (UNS S000), Type 0 (UNS S000), Type 0L (UNS S00), Type 0 (UNS S000), Type 1 (UNS S100), Type 1L (UNS S10), Type 8 (UNS S800), or Type XM- (UNS S00) in accordance with chemical composition specified in QQ-S-. (See Material Identification Marking and Material Code).. FINISH: Passivate in accordance with QQ-P- or Black Oxide coating (except for Type 1 or Type 1L) in accordance with MIL-C-19, Class. (See Finish Code).. MECHANICAL PROPERTIES: The minimum tensile strength in load pounds, indicated for each size in Table I, is based on 80,000 PSI Minimum Tensile Strength. Load pounds are calculated by the stress areas indicated in FED-STD-H8/. The yield strength, based on. percent offset, shall be 0,000 psi minimum.
Requirements: (Continued) MS19D. MAGNETIC PERMEABILITY: When specified, screws shall have a magnetic permeability of less than.0 maximum (air = 1.0) for a field strength H=00 Oersteds using a magnetic permeability indicator per ASTM A. Note: Cold working screws may not be capable of meeting permeability and strength requirements simultaneously.. THREADS: Screw threads shall be Unified external threads Class A UNC in accordance with FED-STD- H8/. Acceptability of screw threads shall be in accordance with FED-STD-H8/0. Threads shall extend to within two threads or less of the bearing surface of the head, except that all lengths over.000 inches shall have a minimum complete thread length of 1.0 inches.. RECESS: Recess shall be in accordance with MS900.. MATERIAL IDENTIFICATION MARKING: Type 1 (UNS S100) or Type 1L (UNS S10) CRES screws nominal size #10 (.1900) and larger shall be permanently marked 1. Markings shall be raised or depressed on the screw head at manufacturer s option. 8. MATERIAL CODE: For 00 Series CRES - No code after dash number indicates any 00 Series Austenitic Corrosion-Resistant Steel listed in material requirement For Type 1 or Type 1L CRES - S1 after dash number indicates Austenitic Corrosion- Resistant Steel Type 1 or Type 1L. 9. FINISH CODE: Passivate - No code letter after dash number, or after material code (if applicable) indicates passivate. Black Oxide - B after dash number, (not available for Type 1 or Type 1L CRES), indicates black oxide coating. 10. PART NUMBER: The part number shall consist of the basic MS number, followed by a dash number from Table I, a material code (if applicable), and a finish code (if applicable). Examples: MS19-1 indicates Screw, Machine-Pan Head, Cross-Recessed, Optional 00 Series CRES, Passivated;.080- UNC-A Nominal Thread Size,.1 Length MS19-1B indicates Screw, Machine-Pan Head, Cross-Recessed, Optional 00 Series CRES, Black Oxide Coated;.080- UNC-A Nominal Thread Size,.1 Length MS19-1S1 indicates Screw, Machine - Pan Head, Cross-Recessed, Type 1 or Type 1L CRES, Passivated;.080- UNC-A Nominal Thread Size,.1 Length NOTES: 1. All dimensions are in inches.. Interpret drawing in accordance with ASME Y1.M.. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take precedence.. Unless otherwise specified, issues of referenced documents are those in effect at the time of solicitation.. MS19 Pan Head Machine Screws manufactured prior to April 199 may be used until stock is depleted.
The screws covered by dash numbers given in MS100, MS1, MS, AN1 in part and AN in part are canceled/inactive after the dates indicated on the documents. Use the dash numbers given in the preceding sheets. The canceled screws cannot always replace the new screws and should be used until existing stock are depleted. Use only the new screws for design and replacement. Replacement should be in accordance with this table. Table II. Interchangeability CROSS REFERENCE OF PART NUMBERS CANCELED NEW MS100 MS 1 8 9 10 11 1 1 1 1 1 1 18 19 0 1 8 9 0 1 8 MS1 AN1 AN MS19 1 8 9 10 11 1 1 1 1 1 1 18 19 0 1 8 9 0 1 CR CR CR CR CR CR CR8 CR10 CR1 CR thru CR1 CR CR CR CR CR CR8 CR10 CR1 CR1 CR1 CR18 CR0 CR CR CR CR8 CR thru CR8 CR CR CR CR CR CR8 CR10 CR1 CR1 CR1 CR18 CR0 CR CR CR CR8 CR0 CR CR DASH NUMBER C- C- C- C- C- C- C-8 C-10 C-1 C- thru C-1 C- C- C- C- C- C-8 C-10 C-1 C-1 C-1 C-18 C-0 C- C- C- C-8 C- thru C-8 C- C- C- C- C- C-8 C-10 C-1 C-1 C-1 C-18 C-0 C- C- C- C-8 C-0 C- C- CR CR CR CR CR8 CR9 CR10 CR1 CR1 CR1 CR18 CR0 CR CR CR CR8 CR0 CR CR CR0 C-0 CR0 CR CR8 1/ New dash numbers added August 198 No replacement C- C- C- C- C-8 C-9 C-10 C-1 C-1 C-1 C-18 C-0 C- C- C- C-8 C-0 C- C- C-0 C- C-8 1 8 9 10 11 1 1 1 1 1 1 18 19 0 1 11 1/ 1 1/ 8 9 0 1 1/ 1 1 1/ 1 1/ 8
Table II. Interchangeability (Continued) CROSS REFERENCE OF PART NUMBERS CANCELED NEW MS100 MS MS1 AN1 AN MS19 DASH NUMBER 9 0 1 8 9 0 1 C8R C8R C8R C8R C8R8 C8- C8- C8- C8- C8-8 C8R C8R C8R C8R C8R8 C8- C8- C8- C8- C8-8 9 0 1 8 9 0 1 8 C8R10 C8R1 C8R1 C8R1 C8R18 C8R0 C8R C8R C8R C8-10 C8-1 C8-1 C8-1 C8-18 C8-0 C8- C8- C8- C8R9 C8R10 C8R1 C8R1 C8R1 C8R18 C8R0 C8R C8R C8R C8-9 C8-10 C8-1 C8-1 C8-1 C8-18 C8-0 C8- C8- C8-1 1/ 8 9 1 1/ 0 18 1/ 1 8 9 0 9 0 1 C8R8 C8R0 C8R C8R C8R0 C8R C8R8 C10R C10R C8-8 C8-0 C8- C8- C8-0 C8- C8-8 C10- C10- C8R8 C8R0 C8R C8R C8R0 C8R C8R8 C10R C10R C8-8 C8-0 C8- C8- C8-0 C8- C8-8 C10- C10-8 9 0 1 8 8 9 0 C10R C10R C10R8 C10R10 C10R1 C10R1 C10R1 C10R18 C10R0 C10- C10- C10-8 C10-10 C10-1 C10-1 C10-1 C10-18 C10-0 C10R C10R C10R8 C10R10 C10R1 C10R1 C10R1 C10R18 C10R0 C10- C10- C10-8 C10-10 C10-1 C10-1 C10-1 C10-18 C10-0 1 19 1/ 10 1/ 8 9 0 1 1 C10R C10R C10R C10R8 C10R0 C10R C10R C10R0 C10R C10R8 C10- C10- C10- C10-8 C10-0 C10- C10- C10-0 C10- C10-8 C10R C10R C10R C10R8 C10R0 C10R C10R C10R0 C10R C10R8 C10- C10- C10- C10-8 C10-0 C10- C10- C10-0 C10- C10-8 11 1/ 9 0 1 8 9 80 81 8 8 8 9 0 1 C1R C1R C1R C1R8 C1R10 C1R1 C1R1 C1R1 C1R18 C1- C1- C1- C1-8 C1-10 C1-1 C1-1 C1-1 C1-18 C0R C0R C0R8 C0R9 C0R10 C0R1 C0R1 C0R1 C0R18 C0- C0- C0-8 C0-9 C0-10 C0-1 C0-1 C0-1 C0-18 8 9 1 1/ 80 81 8 8 1 1/ 1/ New dash numbers added August 198 No replacement
Table II. Interchangeability (Continued) CROSS REFERENCE OF PART NUMBERS CANCELED NEW MS100 MS 8 8 8 8 88 89 90 91 9 9 9 9 9 9 98 99 100 101 10 10 10 10 10 10 MS1 AN1 AN MS19 8 9 80 81 8 8 8 8 8 8 88 89 90 91 9 9 C1R0 C1R C1R C1R C1R8 C1R0 C1R C1R C1R0 C1R C1R8 C1R8 C1R10 C1R1 C1R1 C1R1 C1R18 C1R0 C1R C1R C1R C1R8 C1R0 C1R C1R C1R0 C1R C1R8 C1R DASH NUMBER C1-0 C1- C1- C1- C1-8 C1-0 C1- C1- C1-0 C1- C1-8 C1-8 C1-10 C1-1 C1-1 C1-1 C1-18 C1-0 C1- C1- C1- C1-8 C1-0 C1- C1- C1-0 C1- C1-8 C1- C0R0 C0R C0R C0R C0R8 C0R0 C0R C0R C0R0 C0R C0R8 C0-0 C0- C0- C0- C0-8 C0-0 C0- C0- C0-0 C0- C0-8 8 1 1 8 8 8 88 89 90 91 9 9 9 9 9 9 98 1 1 99 1 1 100 101 10 10 10 10 10 10 108 109 110 111 11 11 11 11 11 11 118 119 9 9 9 9 98 99 100 101 10 10 10 10 C1R10 C1R1 C1R1 C1R1 C1R18 C1R0 C1R C1R C1R C1R8 C1R0 C1R C1R C1R0 C1R C1R8 1/ New dash numbers added August 198 No replacement C1-10 C1-1 C1-1 C1-1 C1-18 C1-0 C1- C1- C1- C1-8 C1-0 C1- C1- C1-0 C1- C1-8 108 109 110 111 19 1 11 10 1 11 11 11 11 11 118 119
Military Interests: Custodians: Preparing activity: Army - AR DLA - IS Navy - YD1 Air Force - 99 (Project 0-18) Reviewer: Army - AV, AT, GL, ME, MI Navy -MC, SH National Security Agency - NSA