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 5960-01-512-0233
NSN 6135-00-985-7845
NSN 5998-00-467-7276
NSN 6650-01-200-9704
NSN 6105-01-619-5549
NSN 6135-01-295-8315
NSN 5996-00-904-8350
NSN 2925-01-252-8049
NSN 5915-01-036-0957
NSN 5960-00-466-2258
NSN 5935-00-419-0121
NSN 5985-01-257-4168