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 5905-01-444-3545
NSN 5925-00-636-5683
NSN 4140-01-528-8364
NSN 5935-01-451-5630
NSN 6150-01-162-6950
NSN 6610-01-102-0194
NSN 6145-01-426-2931
NSN 5950-00-248-6921
NSN 2925-00-155-2100
NSN 6650-00-992-4540
NSN 6645-01-121-6952
NSN 4140-00-074-2389