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 5905-01-036-0062
NSN 5945-00-954-5481
NSN 5960-01-259-3846
NSN 6130-01-364-4881
NSN 5975-01-116-4917
NSN 6320-00-646-3311
NSN 5945-01-392-1068
NSN 6220-01-539-5242
NSN 5905-01-416-9028
NSN 6220-01-248-6269
NSN 5935-01-370-8412
NSN 6220-01-187-7119