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 5920-00-239-6552
NSN 5915-01-550-9489
NSN 6110-01-085-6052
NSN 5855-01-459-7508
NSN 6150-00-477-3230
NSN 5998-01-474-5902
NSN 5998-00-437-8172
NSN 6130-01-131-2122
NSN 5990-01-408-4188
NSN 6620-01-391-7331
NSN 6645-01-129-8211
NSN 6320-01-201-2776