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 6150-01-191-6636
NSN 5965-00-866-3371
NSN 6150-00-015-1289
NSN 5930-00-741-7881
NSN 6135-00-405-1989
NSN 5905-00-004-8850
NSN 6240-01-384-8802
NSN 5910-01-649-3398
NSN 6650-00-299-9681
NSN 5950-01-623-8543
NSN 5915-01-590-7375
NSN 5990-00-013-1042