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 4140-01-166-0028
NSN 6645-01-557-4608
NSN 5950-01-105-0940
NSN 5945-01-526-8795
NSN 6610-01-118-7577
NSN 5996-01-111-8580
NSN 5998-01-265-1071
NSN 6145-01-050-1187
NSN 6610-00-597-5671
NSN 6645-00-163-9580
NSN 5945-01-323-5787
NSN 6650-00-035-9297