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 5835-01-408-2503
NSN 5930-01-155-9886
NSN 5935-00-826-6960
NSN 5925-00-081-1170
NSN 6110-01-080-1193
NSN 4140-01-561-1757
NSN 5999-01-367-5374
NSN 5905-01-499-7818
NSN 5905-01-505-3040
NSN 5985-01-122-8212
NSN 5999-01-215-0274
NSN 5915-00-895-7230