A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5925-00-506-2295
NSN 5905-01-434-3245
NSN 6685-01-437-1357
NSN 5998-00-883-9723
NSN 5895-01-218-7277
NSN 5915-01-265-2992
NSN 2925-00-275-1807
NSN 5990-00-003-0569
NSN 6645-01-530-3654
NSN 5910-01-319-2985
NSN 5965-01-350-5105
NSN 5999-00-612-5075