5305-00-576-2353 (FFS86)
NSN 5305-00-576-2353 (NIIN 00-576-2353) is a socket head cap screw in Federal Supply Class 5305, Screws — an externally threaded fastener whose threaded portion is of one nominal diameter. Manufacturer part number FFS86 (Federal Specifications Promulgated, CAGE 81348).
Key specs: 38 to 42 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $0.04 gov standard price. Supersedes 5305-00-576-2253 (1963).