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 5985-00-882-6496
NSN 5960-01-593-4760
NSN 6650-00-299-9681
NSN 7035-01-383-9357
NSN 4140-00-087-4611
NSN 6110-01-090-1325
NSN 6135-01-597-7685
NSN 6610-01-509-2048
NSN 6135-00-539-8088
NSN 5950-01-197-8480
NSN 5945-01-401-5323
NSN 5950-01-306-4288