An externally threaded fastener whose threaded portion is of one nominal diameter and with a head specially designed to fit in a slot and hold against turning.
NSN 6620-01-391-1920
NSN 6610-00-284-3093
NSN 6240-01-562-1473
NSN 5930-01-071-2237
NSN 5965-01-369-8016
NSN 5910-01-063-5897
NSN 6135-01-108-6057
NSN 6220-01-188-6962
NSN 6650-00-155-8431
NSN 5835-01-654-4570
NSN 6220-01-375-3801
NSN 5985-00-186-5072