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 5996-01-019-8751
NSN 5915-00-569-1434
NSN 5996-00-222-6049
NSN 5945-01-063-3314
NSN 5905-00-960-6551
NSN 5925-01-650-3451
NSN 5996-01-028-6047
NSN 5930-01-010-3283
NSN 5915-00-062-3054
NSN 5925-01-511-5852
NSN 5975-01-145-5900
NSN 6240-01-063-7685