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 6240-01-509-9606
NSN 6320-01-134-7267
NSN 6320-01-629-1277
NSN 6240-01-174-7096
NSN 6620-01-089-4416
NSN 5910-01-336-3683
NSN 5935-01-458-2526
NSN 5965-01-395-0104
NSN 6150-00-123-0048
NSN 2925-01-138-8104
NSN 5895-01-381-3705
NSN 6240-00-904-6650