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 5895-01-492-6790
NSN 2925-00-221-4977
NSN 6130-01-430-7193
NSN 5895-01-290-7874
NSN 6110-01-522-6086
NSN 6150-01-568-7429
NSN 6645-01-503-2240
NSN 2925-01-343-5887
NSN 6685-01-552-6111
NSN 5925-01-467-2668
NSN 6220-01-409-1585
NSN 7035-00-490-0485