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 6105-01-631-8087
NSN 6150-00-202-9150
NSN 5975-01-366-7999
NSN 5925-01-472-6031
NSN 5950-01-376-4438
NSN 6105-01-634-0322
NSN 5915-01-381-0419
NSN 6645-01-519-6324
NSN 5855-01-085-5354
NSN 5945-01-627-0495
NSN 5950-00-629-2341
NSN 5920-00-825-2572