A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5950-01-227-1913
NSN 6130-00-312-2261
NSN 5998-00-190-6717
NSN 6650-01-599-9849
NSN 5915-01-519-2234
NSN 5990-01-633-9503
NSN 6135-01-022-5427
NSN 6240-00-104-4662
NSN 6645-00-232-4070
NSN 5945-01-382-8214
NSN 5985-01-451-0689
NSN 6145-00-921-7990