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 5960-01-097-3285
NSN 5950-01-475-6148
NSN 5905-00-615-7510
NSN 6105-00-049-7518
NSN 2925-01-221-2522
NSN 5999-00-910-8755
NSN 6685-00-036-1698
NSN 5999-00-664-1818
NSN 5920-00-100-2582
NSN 6645-01-285-9431
NSN 6150-01-233-9528
NSN 5930-01-206-4390