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 6130-01-131-0075
NSN 5998-00-769-0414
NSN 4140-01-630-2131
NSN 4140-00-894-1793
NSN 5835-01-110-0697
NSN 6610-00-243-7025
NSN 5905-00-927-3532
NSN 6220-00-519-5617
NSN 6105-00-054-0703
NSN 5905-01-335-9645
NSN 6150-01-527-5782
NSN 5835-00-518-4507