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 5915-00-396-1250
NSN 5925-01-461-3594
NSN 5965-01-291-8208
NSN 5930-00-745-7747
NSN 6645-01-408-6568
NSN 6105-01-050-3799
NSN 5930-01-139-3975
NSN 5960-01-138-3337
NSN 5930-01-074-0117
NSN 6650-01-369-6536
NSN 5945-00-542-1281
NSN 6645-01-059-7090