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 5905-01-517-9579
NSN 6150-00-566-6336
NSN 6610-01-447-2560
NSN 5950-01-513-9108
NSN 5930-01-537-0836
NSN 6610-01-258-6726
NSN 6650-01-538-2259
NSN 5835-00-257-2852
NSN 5996-01-025-2333
NSN 6320-01-052-2118
NSN 5945-01-578-0282
NSN 5960-01-509-8779