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 5935-00-054-1762
NSN 5935-00-202-1103
NSN 6620-00-993-7744
NSN 5910-01-040-7970
NSN 5975-01-577-5406
NSN 6150-01-543-0892
NSN 6220-01-070-2772
NSN 5960-01-424-1781
NSN 5855-00-138-2386
NSN 5999-01-074-5219
NSN 5925-01-462-6172
NSN 5930-00-591-3042