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 7035-01-232-7263
NSN 5998-01-533-6289
NSN 2925-01-141-7563
NSN 6620-01-398-8986
NSN 5945-01-352-5852
NSN 6610-00-924-8157
NSN 6620-01-570-4026
NSN 6240-01-327-4120
NSN 6685-00-104-7149
NSN 5999-01-040-0303
NSN 5999-01-603-5779
NSN 5895-00-153-2595