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 2925-01-076-6128
NSN 5905-00-822-1113
NSN 5855-00-548-4742
NSN 6110-00-496-0532
NSN 6105-00-924-8293
NSN 7035-01-629-6645
NSN 5996-01-613-6927
NSN 5915-00-205-2615
NSN 4140-00-152-7092
NSN 5950-00-132-0128
NSN 4140-00-155-8012
NSN 7035-00-421-8710