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 6135-01-492-5717
NSN 6645-00-922-0886
NSN 6110-00-202-2990
NSN 5999-01-268-6359
NSN 5975-00-923-2033
NSN 5915-01-633-2641
NSN 5835-01-463-2334
NSN 5915-00-409-5888
NSN 5965-01-056-1303
NSN 5855-00-987-1171
NSN 6685-01-272-1868
NSN 6685-01-384-5209