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 5965-00-137-9291
NSN 6645-01-341-0632
NSN 5950-01-446-6903
NSN 5965-01-318-8138
NSN 5930-01-604-8626
NSN 2925-00-639-6677
NSN 6135-01-578-1148
NSN 5965-00-285-0745
NSN 5925-00-931-6138
NSN 5990-00-378-1449
NSN 6240-01-461-3129
NSN 6220-01-312-4570