5305-00-655-9857 (FFS85TYPE2STYLE10PGRADE8)
NSN 5305-00-655-9857 (NIIN 00-655-9857) 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 FFS85TYPE2STYLE10PGRADE8 (Federal Specifications Promulgated, CAGE 81348); also referenced as MS35303-116 (Military Standards).
Key specs: 32 to 38 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Related NSN 5305-00-071-2072.