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 5960-01-425-1454
NSN 5915-00-954-0559
NSN 6685-01-331-6078
NSN 5895-01-367-6006
NSN 6145-01-349-7756
NSN 5990-00-925-3925
NSN 5835-01-580-7543
NSN 5920-00-925-2639
NSN 6240-00-432-2705
NSN 5975-00-282-2707
NSN 5925-00-196-6978
NSN 6110-00-121-0975