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 5999-00-505-5586
NSN 5965-01-502-7006
NSN 6220-01-512-0144
NSN 5905-01-277-6027
NSN 6220-00-593-1779
NSN 6145-01-208-3678
NSN 5965-01-207-0991
NSN 6320-00-228-5678
NSN 4140-01-580-2319
NSN 5855-01-245-8689
NSN 5998-00-513-5680
NSN 6320-01-162-5977