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 5910-00-269-4755
NSN 5990-01-050-1102
NSN 6150-00-243-5528
NSN 5996-01-148-1252
NSN 5910-00-222-6268
NSN 6645-01-544-9475
NSN 6610-00-725-6081
NSN 5915-01-069-2775
NSN 6645-00-574-9712
NSN 6610-00-117-7647
NSN 5855-01-414-6265
NSN 5950-00-186-9315