A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5925-01-114-0907
NSN 5996-01-476-7550
NSN 6150-00-209-8026
NSN 4140-01-443-1271
NSN 6150-01-415-0912
NSN 5965-01-534-4744
NSN 6135-01-490-7704
NSN 6685-01-444-9520
NSN 5985-00-483-2125
NSN 6610-01-431-8575
NSN 6620-00-098-5652
NSN 5998-01-179-5890