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 5975-01-371-3051
NSN 5998-00-417-1010
NSN 6240-01-152-2662
NSN 5925-01-202-4332
NSN 5925-01-027-6443
NSN 5920-00-906-0530
NSN 6620-01-158-9412
NSN 5975-00-810-8782
NSN 5915-01-415-3100
NSN 2925-00-679-8131
NSN 7035-00-283-3112
NSN 6130-01-580-0577