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 6650-01-021-2436
NSN 2925-01-288-0971
NSN 5855-01-400-1590
NSN 6110-01-244-6809
NSN 6145-01-389-6970
NSN 5935-01-295-6459
NSN 5930-01-004-7894
NSN 6130-01-322-5590
NSN 5990-00-772-9277
NSN 5996-01-367-1410
NSN 5920-00-472-1160
NSN 5920-00-216-4759