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 5965-01-352-4906
NSN 5915-01-475-2658
NSN 5945-01-432-7180
NSN 5905-00-439-3895
NSN 5998-01-534-7904
NSN 5945-01-529-7321
NSN 2925-01-547-4565
NSN 5960-00-078-7092
NSN 5999-01-290-3745
NSN 5960-01-516-7264
NSN 6130-01-432-3824
NSN 5960-00-140-6535