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 5930-00-064-6497
NSN 5950-00-325-5498
NSN 5925-01-296-3493
NSN 5930-00-827-0488
NSN 6240-01-533-7305
NSN 7035-00-205-8739
NSN 5935-00-632-7795
NSN 5835-01-537-1228
NSN 5950-00-337-0829
NSN 5965-01-202-1007
NSN 5910-01-381-3009
NSN 5925-00-401-6274