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 5855-00-494-9581
NSN 6645-01-322-8431
NSN 5945-00-830-2809
NSN 6110-01-153-2290
NSN 5905-00-969-4152
NSN 6130-00-878-4729
NSN 6130-01-193-1686
NSN 7035-01-143-3573
NSN 5950-01-523-5361
NSN 5930-00-936-8105
NSN 5990-01-061-5618
NSN 6620-00-555-3992