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 6220-01-549-4913
NSN 5910-01-596-6525
NSN 5990-01-423-8189
NSN 5905-01-202-9237
NSN 5998-00-923-0947
NSN 6145-01-644-0534
NSN 5920-01-359-8720
NSN 5905-01-103-6415
NSN 5930-01-094-2041
NSN 6130-01-546-9882
NSN 6105-01-259-2952
NSN 5999-00-957-4959