A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 6135-01-490-7704
NSN 6110-00-161-4115
NSN 6320-01-021-6633
NSN 4140-00-068-0267
NSN 2925-00-351-1015
NSN 2925-01-335-4549
NSN 5975-01-113-1069
NSN 6130-00-876-2511
NSN 5945-00-585-7032
NSN 5895-00-483-9720
NSN 5895-00-771-2044
NSN 6145-01-518-2185