A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5950-00-943-9492
NSN 5999-01-451-7483
NSN 6130-01-049-2984
NSN 5915-01-615-2943
NSN 6130-01-218-5217
NSN 5996-01-388-1275
NSN 5905-01-547-4184
NSN 6240-00-222-9392
NSN 5990-00-719-4947
NSN 5920-01-211-5557
NSN 5920-01-619-5258
NSN 5945-00-610-2041