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 5985-01-151-4817
NSN 6645-01-496-9868
NSN 5925-00-492-6228
NSN 6220-00-443-0589
NSN 6110-01-219-9926
NSN 6135-01-642-4964
NSN 6320-00-937-5625
NSN 5835-01-506-0746
NSN 6220-01-330-4425
NSN 5930-01-469-2659
NSN 5950-01-468-7639
NSN 5920-01-010-7101