A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 6150-01-468-4299
NSN 2925-01-054-3190
NSN 6110-01-585-0155
NSN 2925-01-537-7625
NSN 6130-01-013-3508
NSN 2925-01-198-7528
NSN 5835-00-926-0195
NSN 7035-00-252-7467
NSN 5910-01-392-4817
NSN 6610-01-524-9576
NSN 6105-01-558-3697
NSN 5998-01-322-0380