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 5996-01-025-2333
NSN 5930-00-877-6954
NSN 5855-01-650-3762
NSN 5960-01-536-9763
NSN 6145-01-584-0806
NSN 5855-01-447-3137
NSN 4140-01-550-0022
NSN 5945-01-441-0935
NSN 5835-00-016-3671
NSN 5975-00-366-7440
NSN 7035-01-416-5910
NSN 2925-01-509-3783