5305-00-292-7953 (FFS107)
NSN 5305-00-292-7953 (NIIN 00-292-7953) is a tapping screw in Federal Supply Class 5305, Screws — a hardened externally threaded fastener whose thread extends to the bearing surface of the head. Manufacturer part number FFS107 (Federal Specifications Promulgated, CAGE 81348); also referenced as STSBL001A10-16 (Lockheed Martin Corp); PK89XA10-16 (Usm Corp Sub Of Emhart Industries).
Key specs: case-hardened; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Related NSN 5305-00-057-9619.