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 5985-01-074-6950
NSN 5835-01-414-3258
NSN 6645-01-383-6514
NSN 5998-00-340-3727
NSN 5920-01-425-4322
NSN 5998-01-588-1206
NSN 6135-01-278-9717
NSN 6150-00-644-8745
NSN 5996-01-084-6930
NSN 5935-00-594-0924
NSN 6150-01-158-5053
NSN 5996-01-418-0677