A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5996-00-327-2163
NSN 5920-00-980-4112
NSN 6105-00-527-8571
NSN 5930-01-237-2596
NSN 5915-01-056-7411
NSN 5945-01-023-2159
NSN 5965-01-415-0872
NSN 6135-01-168-2944
NSN 6130-00-751-8988
NSN 5915-01-050-9080
NSN 6150-01-537-3195
NSN 5960-01-599-9821