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 5996-01-174-9166
NSN 5996-01-459-8590
NSN 5915-01-398-6277
NSN 6620-01-480-6206
NSN 6240-01-323-7032
NSN 6650-01-519-1322
NSN 6610-00-170-6715
NSN 5895-00-841-1745
NSN 5905-01-498-4607
NSN 5855-01-437-6161
NSN 4140-00-340-7685
NSN 5925-01-518-9119