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 5925-01-519-6024
NSN 6130-00-609-3358
NSN 5905-01-422-0127
NSN 7035-01-510-8787
NSN 5835-01-464-2662
NSN 5910-01-322-0918
NSN 5905-00-379-4658
NSN 5935-00-112-5194
NSN 5960-01-449-1310
NSN 6130-00-959-8963
NSN 5855-01-572-5390
NSN 6620-00-800-5579