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 5945-00-202-9741
NSN 6105-00-960-6327
NSN 5960-00-529-2704
NSN 5915-00-838-3830
NSN 5985-01-590-5389
NSN 6645-01-425-1673
NSN 5960-01-528-1147
NSN 6150-01-337-2504
NSN 6135-01-443-5279
NSN 5945-01-315-5810
NSN 5835-01-596-9908
NSN 5835-00-572-7445