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 6135-01-611-0125
NSN 5910-00-497-2903
NSN 5999-01-322-0168
NSN 5965-00-568-5802
NSN 6620-01-037-0275
NSN 5935-00-254-5508
NSN 6650-01-212-3964
NSN 5930-00-061-8772
NSN 5999-01-541-5931
NSN 7035-01-305-1950
NSN 5855-01-250-2421
NSN 6150-01-423-8620