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 5915-00-532-7023
NSN 6110-01-289-1284
NSN 5990-00-116-1919
NSN 5855-01-446-9545
NSN 5950-00-254-0070
NSN 5855-01-312-5160
NSN 5895-01-122-5582
NSN 6105-01-069-9190
NSN 6610-01-400-3880
NSN 5975-01-651-8093
NSN 5960-01-624-1170
NSN 5998-01-127-6776