5305-01-209-7183 (FF-S-85)
NSN 5305-01-209-7183 (NIIN 01-209-7183) 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 FF-S-85 (Federal Specifications Promulgated, CAGE 81348); also referenced as NASM35308 (National Aerospace Standards); MS35308-382 (Military Standards).
Key specs: 80 rockwell c minimum overall hardness; full characteristics table below. NIIN assigned June 1985; DEMIL A (none required); unit of issue EA (each), $1.12 gov standard price.