No other part numbers with same form, fit, and function found.
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 4140-01-557-5790
NSN 5990-00-054-4785
NSN 6645-01-249-7209
NSN 5965-01-107-4078
NSN 5996-01-195-4122
NSN 6240-00-237-7878
NSN 4140-00-244-2365
NSN 6150-00-546-0044
NSN 5985-01-460-0236
NSN 6645-01-532-3172
NSN 5960-01-387-5290
NSN 5855-01-147-4785