5305-01-165-7520 (10001)
NSN 5305-01-165-7520 (NIIN 01-165-7520) 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 10001 (Beta Mfg Co IncSub Of Hayes Corp, CAGE 22271); also referenced as M10HM15 (Beta Mfg Co IncSub Of Hayes Corp).
Key specs: case-hardened; full characteristics table below. NIIN assigned November 1983; DEMIL A (none required); unit of issue EA (each), $3.15 gov standard price.