5305-01-036-7897 (FF-S-85)
NSN 5305-01-036-7897 (NIIN 01-036-7897) 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 MS90725-296, NASM90725 (National Aerospace Standards).
Key specs: 19 to 30 rockwell c overall hardness; full characteristics table below. NIIN assigned March 1977; DEMIL A (none required).