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 6130-00-190-4115
NSN 5920-00-777-6490
NSN 5930-01-659-3938
NSN 6645-00-888-5820
NSN 6105-01-095-6090
NSN 6145-00-117-4806
NSN 5975-00-209-6498
NSN 5920-00-828-7904
NSN 5835-00-155-1379
NSN 6610-01-269-5437
NSN 5895-01-061-5064
NSN 5925-00-775-3614