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 6105-01-071-7670
NSN 5945-00-171-4484
NSN 5910-00-734-5195
NSN 5950-01-521-3540
NSN 6320-00-433-2773
NSN 5950-01-421-1788
NSN 6240-01-450-4886
NSN 5925-01-110-1785
NSN 6650-01-343-4342
NSN 5960-01-441-5340
NSN 6145-01-285-8953
NSN 6240-01-462-3461