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 2925-00-503-9122
NSN 5855-00-058-1293
NSN 5985-01-398-8567
NSN 2925-01-633-4048
NSN 6240-01-598-3969
NSN 6150-01-319-2630
NSN 5935-00-233-3322
NSN 5965-01-023-9359
NSN 5998-01-596-0348
NSN 5930-01-113-2319
NSN 5985-01-456-0357
NSN 5965-00-247-4886