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 5855-01-634-0259
NSN 4140-00-905-5035
NSN 5935-00-928-5574
NSN 5895-00-203-2379
NSN 6650-00-159-7117
NSN 5965-01-024-2154
NSN 6135-01-205-5965
NSN 5945-00-972-8242
NSN 5855-00-436-3852
NSN 5835-01-370-4292
NSN 6145-01-594-2389
NSN 6220-00-838-6090