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 5930-01-101-6144
NSN 5920-01-378-5097
NSN 5998-00-466-2278
NSN 6240-00-660-8849
NSN 4140-01-501-7623
NSN 6105-01-512-1831
NSN 5930-00-243-7601
NSN 5975-00-014-0784
NSN 7035-01-151-0265
NSN 5935-00-141-5933
NSN 5895-01-383-6473
NSN 5835-00-905-7165