5305-00-054-9301 (FFS210)
NSN 5305-00-054-9301 (NIIN 00-054-9301) is a setscrew in Federal Supply Class 5305, Screws — an externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone. Manufacturer part number FFS210 (Federal Specifications Promulgated, CAGE 81348); also referenced as MS51955-96 (Military Standards).
Key specs: 30 to 37 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1960; DEMIL A (none required); unit of issue EA (each), $0.24 gov standard price; ships at 0.31 lb / 0.002 cu ft. Supersedes 5305-00-013-7978 (2023), 5305-00-639-1022 (2023); related NSN 5305-00-639-1022.