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 6135-01-307-6006
NSN 5950-00-583-5809
NSN 5990-01-109-5295
NSN 5935-01-029-9667
NSN 5945-01-260-7741
NSN 7035-01-247-6256
NSN 5945-01-644-4735
NSN 5905-00-800-3470
NSN 5925-01-146-9641
NSN 5930-00-996-1605
NSN 5855-01-020-7982
NSN 5910-01-501-9988