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 2925-01-180-7793
NSN 5945-01-347-1825
NSN 5935-01-089-4337
NSN 5930-00-469-2316
NSN 5950-01-509-6293
NSN 5925-01-512-1651
NSN 5960-01-227-5245
NSN 5950-00-686-9945
NSN 5925-01-389-9341
NSN 5990-00-997-8945
NSN 5920-01-361-8835
NSN 4140-01-650-2700