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 2925-01-583-5619
NSN 5905-00-916-9066
NSN 5960-00-494-8937
NSN 7035-01-383-6549
NSN 6645-01-205-0549
NSN 5895-00-930-4660
NSN 6145-00-239-2143
NSN 5910-01-347-6990
NSN 2925-01-327-3069
NSN 5895-00-118-1895
NSN 5960-01-346-3377
NSN 6145-01-498-4726