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 6320-01-284-4508
NSN 2925-01-094-4771
NSN 5945-01-022-7784
NSN 6150-01-268-1338
NSN 5920-01-307-3866
NSN 2925-00-416-2894
NSN 5915-00-369-8422
NSN 5855-00-631-4565
NSN 6650-01-485-2351
NSN 6150-01-554-1262
NSN 5920-01-419-8821
NSN 5975-01-442-5558