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 7035-00-088-7355
NSN 5925-01-342-8348
NSN 6145-01-519-2996
NSN 6645-01-113-6712
NSN 7035-00-104-7613
NSN 4140-01-500-9197
NSN 6145-01-023-1526
NSN 6135-01-353-3802
NSN 5835-01-446-6065
NSN 6610-01-359-0008
NSN 6110-00-929-3469
NSN 6220-01-562-8507