5305-00-497-4064 (FFS107)
NSN 5305-00-497-4064 (NIIN 00-497-4064) 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 Q5033A4-6 (General Dynamics Corp Convair Div); PK65A4-6 (Usm Corp Sub Of Emhart Industries).
Key specs: case-hardened; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Related NSN 5305-00-432-4169.