1、MSSLBbb REV A (1) m 7779732 0070304 415 w 1 MS51866A AMENDMENT 1 9 MARCH 1998 MILITARY STANDARD NUT, SELF-LOCKING, SPLINE -GENE- PURPOSE, 2500 F This amendment forms a part of MS51866At dated 15 Januazy 1976, and is approved for use by all Departments and Agencies of the Department of Defense. PAGE
2、1 In Title Block, Change TITLE To: “NUT, SELF-LOCKING, SPLINE, NON-METALLIC INSERT, 2500 .If Delete : In Procurement Specification Block, “MIL-N-45913, Substitute: “MIL-DTL-25027“ Delete: In Figure Note “Configuration of Locking Feature (All-Metal or Non-Metallic Insert) Optionalrt Substitute : “Sha
3、pe Of Top Optional“ Delete: Note i. MATERIAL in entirety. Substitute : WATERIAL: Steel, Grades 12L14 (UNS G12144) Per SAE 5403, 1215 (UNS G12150) Per SAE 5403, 1137 (UNS 611370) Per AMS5024, llL37 (UNS G11374) Per AMs 5020. Steel nuts shall meet mechanical property requirements in procurement specif
4、ication for shear-type nuts. Corrosion Resistant Steel (CRES), Type 303 (UNS S30300) Per AMs 5640. Insert: Nylon Per ASTM D4066, Group 1, Class 1 or 2.“ Delete Note 2. PROTECTIVE COATING in entirety. Substitute “PROTECTIVE COATING: Steel Nuts, Cadmium Plate Per QQ-P-416, Type II, Class 2. CRES, Pass
5、ivate Per ASTM A967.“ Add Note 9. Nuts shall meet axial tensile strength requirements listed in procurement specification for shear-type nuts. In Table, Change Thread Designations as follows: “8-32 UNC-38“ To “ .1640-32UNJC-3Bff “10-32 UNF-3B“ TO “. 1900-32UNJF-3B“ “1/4-28 UNF-3B“ TO “ .2500-28UNJF-
6、3Brt “5/16-24 UNF-3B“ TO “ .3125-24UNJ“-3Btr “3/8-24 UNF-3B“ TO “ .3750-24UNJF-3Bt “7/16-20 UNF-3B“ TO “ .4375-20UNJF-3Bfr “1/2-20 NF-3B“ To “. 5000-20NJF-3Br Custodians: Army - AV Navy - As Air Force - 99 Preparing Activity: DLA-IS (Project 5310-2345) AMSC N/A FSC 5310 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
