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 6105-00-862-4951
NSN 5930-00-253-1741
NSN 6110-01-359-5382
NSN 5985-01-366-7950
NSN 7035-00-495-2137
NSN 5855-00-318-7185
NSN 5895-00-193-3760
NSN 5915-01-501-5895
NSN 5930-01-619-9337
NSN 5910-01-076-4454
NSN 5930-00-264-6334
NSN 5935-01-094-6711