A hardened cylindrical fastener with multiple spiral flutes on its shank. It also has an end smaller in diameter than the outside diameter of the spiral flutes, which acts as a pilot when driven into a drilled hole.
NSN 5895-01-136-5979
NSN 6130-00-925-8083
NSN 5930-00-732-5584
NSN 5920-00-916-5514
NSN 5910-01-558-8388
NSN 6135-00-990-1822
NSN 6320-00-456-2092
NSN 6320-01-492-1976
NSN 4140-01-644-8606
NSN 5990-01-476-8813
NSN 5999-01-278-2204
NSN 5945-01-322-1741