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 6220-01-616-4492
NSN 4140-01-435-6198
NSN 5915-00-504-9416
NSN 5960-01-224-7151
NSN 6645-01-180-6219
NSN 2925-00-617-0826
NSN 2925-01-530-6727
NSN 5996-01-633-7979
NSN 5965-01-320-9742
NSN 5960-01-350-2925
NSN 6610-01-519-3080
NSN 4140-01-419-0198