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 5975-00-862-4506
NSN 5960-01-177-0338
NSN 6240-01-080-9620
NSN 5910-01-288-0142
NSN 5855-01-250-2421
NSN 5920-01-141-6885
NSN 5945-00-203-5575
NSN 5835-00-612-1621
NSN 6130-00-248-3259
NSN 6135-01-370-9440
NSN 5975-01-643-3599
NSN 5999-00-501-0703