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 5895-00-837-3441
NSN 6110-01-241-0537
NSN 7035-01-423-8343
NSN 6145-01-478-1722
NSN 6650-01-230-3032
NSN 6145-01-071-6518
NSN 5930-01-085-8553
NSN 2925-01-595-9720
NSN 6110-01-512-2758
NSN 6320-00-578-6898
NSN 6620-01-068-4498
NSN 6240-01-358-7127