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 5915-01-183-9326
NSN 2925-01-411-4666
NSN 5835-01-416-6455
NSN 6650-00-851-4772
NSN 6130-01-211-5828
NSN 5920-01-267-6086
NSN 5996-00-358-1899
NSN 5950-00-355-4034
NSN 2925-00-797-1042
NSN 5965-01-463-7915
NSN 5998-01-317-6231
NSN 6320-00-331-7138