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 6130-01-003-2289
NSN 5905-01-518-5088
NSN 6320-01-341-9126
NSN 5895-01-500-3402
NSN 5990-01-586-5754
NSN 4140-01-525-0786
NSN 5960-00-856-5943
NSN 6110-00-652-6643
NSN 5910-00-844-5809
NSN 2925-01-480-8273
NSN 5985-01-352-0428
NSN 5996-00-081-3175