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 5999-00-934-8747
NSN 6135-00-248-4102
NSN 5935-00-149-4201
NSN 4140-00-763-6527
NSN 5925-00-867-8619
NSN 6130-01-429-5633
NSN 6320-01-029-4220
NSN 5905-01-602-4272
NSN 5930-01-135-0096
NSN 6135-01-398-5922
NSN 6620-01-577-6285
NSN 5965-00-566-4221