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 5930-00-659-2241
NSN 6620-00-646-9474
NSN 5935-01-153-2662
NSN 5975-01-187-5403
NSN 6130-01-310-8441
NSN 5990-01-204-7576
NSN 5965-01-137-3769
NSN 5930-01-460-4691
NSN 5965-00-153-5216
NSN 5960-00-989-8678
NSN 5950-01-113-5935
NSN 6145-01-528-7853