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 6150-01-324-5472
NSN 4140-00-063-4183
NSN 5895-01-229-6950
NSN 5905-00-949-5442
NSN 5895-00-195-7714
NSN 2925-01-208-0711
NSN 6110-00-194-4980
NSN 6150-01-250-2772
NSN 5935-01-492-7908
NSN 5935-01-211-7773
NSN 5905-00-828-4176
NSN 4140-01-415-5595