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 6145-01-554-7667
NSN 7035-01-110-5745
NSN 5855-01-558-9357
NSN 5915-01-276-1164
NSN 6685-01-042-7835
NSN 5905-00-480-9705
NSN 5945-01-145-5488
NSN 5855-01-332-3011
NSN 6135-01-010-0891
NSN 7035-01-633-9537
NSN 4140-01-561-0386
NSN 7035-01-444-4240