A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5910-01-524-2037
NSN 6320-01-029-4220
NSN 6145-01-464-1324
NSN 6685-01-158-1184
NSN 5960-00-338-3577
NSN 5935-01-053-8467
NSN 6240-01-082-3387
NSN 5915-01-381-1138
NSN 6320-01-029-4220
NSN 5990-01-606-9305
NSN 5996-01-076-0905
NSN 6110-01-265-4625