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 5990-01-294-6198
NSN 5996-01-601-1299
NSN 6685-00-957-0716
NSN 6645-00-641-3202
NSN 5855-00-436-3852
NSN 5835-00-334-6556
NSN 5905-00-415-1912
NSN 5895-01-073-6914
NSN 5998-01-076-1683
NSN 5930-01-548-1479
NSN 6620-01-314-3635
NSN 5835-01-270-7899