5305-00-655-9456 (FFS85)
NSN 5305-00-655-9456 (NIIN 00-655-9456) 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 FFS85 (Federal Specifications Promulgated, CAGE 81348); also referenced as MS35309-511 (Military Standards).
NIIN assigned January 1963; DEMIL A (none required).