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 6105-01-245-8725
NSN 6240-01-604-9172
NSN 6105-01-525-8006
NSN 5960-01-474-4843
NSN 5985-01-369-7481
NSN 6645-01-363-9790
NSN 5965-01-582-7635
NSN 5998-00-155-6002
NSN 5915-00-058-9207
NSN 5960-01-628-2760
NSN 5915-01-386-8114
NSN 6105-00-494-8385