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 5996-01-139-2843
NSN 6105-01-579-3695
NSN 7035-01-094-2365
NSN 7035-01-449-1189
NSN 5990-00-110-1153
NSN 5925-01-657-6788
NSN 6145-01-430-9247
NSN 5965-00-408-5501
NSN 5905-00-952-2455
NSN 5999-01-489-6139
NSN 6240-01-620-7401
NSN 6105-01-361-6456