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 6685-00-590-6522
NSN 6135-01-538-3507
NSN 6220-00-225-8345
NSN 5985-01-435-7088
NSN 5920-01-634-0250
NSN 6220-01-043-6500
NSN 5998-01-067-7312
NSN 6320-01-139-0533
NSN 6620-01-091-1038
NSN 5930-01-438-1321
NSN 5935-00-170-1894
NSN 5925-01-128-6694