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 5895-01-296-5965
NSN 5910-01-524-5680
NSN 6150-01-254-2764
NSN 5925-01-469-2154
NSN 6685-01-181-9998
NSN 5925-00-591-2792
NSN 5925-01-487-2292
NSN 5910-01-384-2665
NSN 5920-01-231-9175
NSN 5935-00-289-9905
NSN 5915-01-478-3110
NSN 6320-01-227-2648