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 6650-01-560-0321
NSN 4140-01-327-3241
NSN 5990-01-299-2014
NSN 6620-01-525-8648
NSN 6320-01-050-1290
NSN 7035-01-605-6368
NSN 5935-00-597-5055
NSN 5945-01-498-8333
NSN 6650-00-088-4741
NSN 5905-00-246-8941
NSN 5855-01-076-9369
NSN 5996-01-312-3508