A headless fastener externally threaded on both ends with each threaded portion of one but not necessarily the same nominal diameter. It is designed to be locked in place by either a ring, lock, serrated or a ring, lock, keyed.
NSN 7035-01-013-9889
NSN 5935-01-343-3276
NSN 7035-00-413-0992
NSN 6620-00-127-6134
NSN 6150-01-558-9554
NSN 5975-01-617-0684
NSN 5975-01-299-4744
NSN 6685-00-950-6127
NSN 5975-01-535-1303
NSN 5835-01-498-9410
NSN 5985-01-492-6257
NSN 6645-01-037-9125