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 5950-00-431-3619
NSN 7035-01-018-9629
NSN 5965-00-484-8236
NSN 2925-01-528-7333
NSN 5975-00-244-0049
NSN 6240-01-242-7733
NSN 5855-01-068-3683
NSN 6150-01-097-7548
NSN 6105-01-350-3333
NSN 2925-01-608-6895
NSN 6650-01-410-8542
NSN 5915-00-626-2901