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 6620-01-524-9112
NSN 5965-00-554-4138
NSN 5996-01-061-6894
NSN 5999-00-554-9966
NSN 5925-01-100-5478
NSN 6220-01-543-0311
NSN 6650-01-472-2244
NSN 6145-01-544-0714
NSN 5965-01-408-9551
NSN 5895-01-067-7276
NSN 5990-01-386-8051
NSN 5960-00-978-7435