A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5975-01-354-9228
NSN 5930-01-252-7638
NSN 4140-01-572-0204
NSN 5910-00-772-2785
NSN 6610-00-186-9180
NSN 5935-00-420-4444
NSN 5935-01-050-9171
NSN 6645-01-373-5876
NSN 5996-01-264-8463
NSN 5965-01-575-6787
NSN 5975-00-715-3710
NSN 6145-01-215-0178