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 5945-01-257-2110
NSN 6220-01-484-7931
NSN 6105-01-141-7727
NSN 5996-01-153-0531
NSN 5999-01-147-9932
NSN 5930-01-173-0835
NSN 6150-00-518-1402
NSN 6620-01-460-2788
NSN 5930-00-153-3853
NSN 5935-00-276-9413
NSN 6110-00-185-8147
NSN 5965-00-083-8157