An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 5960-00-052-3289
NSN 5835-00-740-0246
NSN 5905-00-754-3327
NSN 5925-00-926-0863
NSN 6150-00-141-0293
NSN 5950-01-091-5929
NSN 5855-01-528-8776
NSN 7035-01-169-6551
NSN 5960-00-018-3477
NSN 5985-01-598-4702
NSN 4140-00-959-4255
NSN 6130-01-392-3769