A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5910-01-142-9501
NSN 6110-00-397-7531
NSN 5990-01-215-0590
NSN 5925-01-328-7382
NSN 5985-00-256-4111
NSN 5915-01-027-0163
NSN 5935-01-396-3025
NSN 5965-01-480-3096
NSN 5930-01-330-5403
NSN 5999-01-550-0997
NSN 5925-01-461-1628
NSN 5930-01-560-1690