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 6650-00-498-6336
NSN 5996-01-442-8751
NSN 6240-01-149-8590
NSN 6220-01-527-8105
NSN 5915-00-941-0339
NSN 6240-01-058-8868
NSN 5930-01-512-8227
NSN 5965-00-827-9680
NSN 6105-01-513-9330
NSN 5895-01-532-4072
NSN 5998-01-217-1003
NSN 6320-00-521-9350