A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5905-00-469-3507
NSN 6650-00-221-9425
NSN 6145-01-467-2396
NSN 6685-01-008-3451
NSN 5975-01-411-7724
NSN 6320-00-908-6841
NSN 5975-01-012-4164
NSN 5965-01-332-6693
NSN 5950-00-278-4186
NSN 5975-01-495-1733
NSN 5855-01-100-3272
NSN 6240-01-087-4749