An item having wrenching facilities on one end and a threaded connection of one type within an externally threaded connection of another type. One connection must have machine threads not designed for any type of tube or tube fitting.
NSN 6650-01-426-4253
NSN 6685-01-210-8175
NSN 6220-01-150-4920
NSN 5935-01-505-1165
NSN 6110-00-625-6728
NSN 6110-01-472-1963
NSN 6620-00-506-0112
NSN 5996-01-381-2876
NSN 6645-01-188-5237
NSN 5950-00-721-5642
NSN 6130-01-112-3602
NSN 5945-01-068-2666