A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5925-01-460-3043
NSN 6320-01-019-1028
NSN 2925-01-460-1601
NSN 5990-00-946-5650
NSN 4140-01-294-4044
NSN 6610-01-532-4217
NSN 6145-01-313-9864
NSN 5920-01-056-5481
NSN 5950-00-420-1653
NSN 5935-00-809-7090
NSN 5996-00-205-2933
NSN 5998-01-010-7193