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 7035-01-087-7727
NSN 4140-01-400-3610
NSN 5990-01-529-7307
NSN 5835-01-606-8768
NSN 5910-00-243-2893
NSN 5835-00-393-1996
NSN 7035-01-151-0265
NSN 6110-01-465-9422
NSN 5945-00-142-0005
NSN 5945-00-850-0428
NSN 5935-00-499-9070
NSN 5985-00-185-1276