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 5925-01-384-3402
NSN 5960-00-220-9717
NSN 5925-01-420-9433
NSN 5990-01-512-9129
NSN 5910-01-193-4975
NSN 5915-01-445-4107
NSN 5998-01-565-9021
NSN 6130-01-142-1308
NSN 6150-01-178-3535
NSN 2925-01-648-6859
NSN 6105-01-168-7124
NSN 5935-00-934-9718