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 5935-00-139-6729
NSN 5835-01-495-5986
NSN 7035-00-870-0290
NSN 5960-01-004-5483
NSN 5965-01-585-2473
NSN 6240-00-143-6558
NSN 5855-01-100-3272
NSN 5855-01-389-8884
NSN 5835-01-337-6247
NSN 5998-01-441-9315
NSN 5985-00-785-6872
NSN 5950-00-883-4659