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 6320-01-448-6265
NSN 6130-01-608-4371
NSN 5950-01-475-7424
NSN 6130-01-355-7285
NSN 6620-01-355-4339
NSN 5930-01-262-2151
NSN 6150-01-514-7370
NSN 5985-00-973-5833
NSN 5905-01-451-1899
NSN 5950-00-995-3945
NSN 6320-01-420-0340
NSN 5910-00-475-4182