A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 6220-01-265-1077
NSN 7035-00-445-9657
NSN 6130-01-459-7582
NSN 6620-00-221-7608
NSN 6130-01-475-2361
NSN 6130-00-243-5284
NSN 7035-01-193-2667
NSN 5965-01-431-7377
NSN 6320-01-198-4024
NSN 5935-01-105-9912
NSN 6610-01-331-6966
NSN 5935-01-396-2033