A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5996-01-622-5008
NSN 5895-01-634-0630
NSN 5990-01-264-9759
NSN 5835-01-480-9215
NSN 6105-01-481-1840
NSN 4140-01-043-5089
NSN 6105-01-491-8072
NSN 6135-01-096-1452
NSN 6135-01-278-9717
NSN 5910-00-170-0197
NSN 6320-01-512-2031
NSN 6130-01-598-4710