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 5925-01-471-0376
NSN 5998-00-218-1360
NSN 5835-01-132-7002
NSN 5935-01-607-3032
NSN 5990-01-434-7913
NSN 2925-01-471-3365
NSN 6610-01-118-7577
NSN 5920-01-096-0718
NSN 6620-01-515-6269
NSN 6145-01-084-8317
NSN 5925-01-562-3552
NSN 6110-01-362-8191