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 6240-01-319-4380
NSN 5925-01-167-5954
NSN 5985-01-276-4713
NSN 5915-00-838-5151
NSN 5950-01-617-9147
NSN 5960-00-248-3094
NSN 5965-00-362-2158
NSN 5998-01-084-4644
NSN 6240-01-190-3541
NSN 5985-00-322-4715
NSN 5920-00-815-0529
NSN 6620-01-449-3101