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 5996-00-456-0895
NSN 5895-00-691-5586
NSN 6650-00-674-1240
NSN 5996-01-155-3022
NSN 5915-01-175-7388
NSN 5925-01-435-5869
NSN 6240-00-761-2244
NSN 6645-01-216-7168
NSN 5905-01-398-5511
NSN 6650-01-420-3155
NSN 5965-00-926-2591
NSN 6610-01-376-3993