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 5965-01-426-1278
NSN 5965-01-502-9684
NSN 6650-01-426-2729
NSN 5950-01-102-7771
NSN 5910-00-057-8816
NSN 5975-01-158-6150
NSN 5935-01-537-6569
NSN 5835-01-529-3050
NSN 6145-01-134-1605
NSN 5835-00-269-2232
NSN 5945-00-502-9644
NSN 6220-00-754-8375