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 5835-01-576-9013
NSN 6610-00-978-4000
NSN 6110-01-626-8228
NSN 2925-01-523-3607
NSN 5895-01-578-1911
NSN 6610-01-417-4389
NSN 5998-01-371-2428
NSN 5985-01-075-2804
NSN 5945-00-871-5860
NSN 5960-00-864-2883
NSN 5905-01-303-8025
NSN 6135-01-202-8113