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 5855-01-433-2220
NSN 5855-00-610-4052
NSN 6620-00-229-2728
NSN 5935-00-276-9399
NSN 6320-01-538-6737
NSN 5930-00-600-3832
NSN 6135-01-415-1163
NSN 5975-01-446-8773
NSN 6620-01-471-4360
NSN 6220-01-113-3257
NSN 6650-01-642-5803
NSN 5950-01-319-4127