5305-00-018-0141 (180141)
NSN 5305-00-018-0141 (NIIN 00-018-0141) is a hexagon head cap screw in Federal Supply Class 5305, Screws — an externally threaded fastener designed for insertion into holes in assembled parts. Manufacturer part number 180141 (General Motors Corp, CAGE 24617); also referenced as MS35297-82 (Military Standards).
Key specs: 23 to 30 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Related NSN 5305-00-069-5570.