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 6685-01-632-8809
NSN 6220-00-900-4439
NSN 5935-00-419-0502
NSN 6685-01-596-5654
NSN 5945-01-079-2910
NSN 5990-01-309-5840
NSN 6650-01-355-9740
NSN 6645-00-791-5284
NSN 6130-01-294-2759
NSN 6240-01-534-2987
NSN 6240-01-591-9030
NSN 5990-00-561-3407