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 5935-00-960-6260
NSN 5996-01-586-9111
NSN 6145-01-074-7541
NSN 6320-01-317-3663
NSN 5895-01-408-1906
NSN 7035-01-169-6551
NSN 6610-00-988-9294
NSN 5930-00-857-0633
NSN 6610-01-128-2428
NSN 5965-00-547-4876
NSN 5895-01-558-1075
NSN 6610-00-276-8919