A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 6150-01-497-2857
NSN 6145-01-313-3604
NSN 6105-01-423-2784
NSN 5985-01-272-4489
NSN 5910-01-462-2440
NSN 6150-01-597-7690
NSN 5998-01-245-8668
NSN 5835-01-160-7282
NSN 5935-01-646-7608
NSN 5999-00-135-2404
NSN 5835-01-123-8305
NSN 5855-01-147-4785