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 6650-00-842-5463
NSN 6105-01-633-0157
NSN 5965-01-513-9978
NSN 6110-01-288-4221
NSN 6150-01-425-1311
NSN 5990-01-164-0220
NSN 5930-00-371-6670
NSN 6130-01-102-5935
NSN 5985-01-267-7169
NSN 6145-01-086-7517
NSN 6130-01-033-9924
NSN 5998-01-341-5003