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 5835-00-690-8898
NSN 5950-01-359-7295
NSN 5920-00-565-6120
NSN 5915-00-762-2440
NSN 2925-01-412-9520
NSN 6110-01-063-3319
NSN 5945-01-571-8594
NSN 5925-01-310-5729
NSN 5925-01-431-8088
NSN 6105-01-633-8511
NSN 5965-01-633-8849
NSN 5895-00-518-4954