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 5935-01-005-9927
NSN 6685-01-386-3110
NSN 5999-01-338-9654
NSN 5910-00-196-8960
NSN 5996-01-503-0742
NSN 5935-00-713-3682
NSN 5999-00-168-0356
NSN 5996-01-423-7964
NSN 5998-01-633-3671
NSN 5895-01-136-4366
NSN 5950-00-337-8277
NSN 7035-00-803-3056