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 6610-00-419-0315
NSN 6105-01-252-8847
NSN 5975-01-332-5260
NSN 6620-00-179-9079
NSN 5960-01-481-3722
NSN 5910-00-475-0143
NSN 6240-00-781-9899
NSN 6650-01-268-9702
NSN 6645-00-309-0447
NSN 5945-00-165-3878
NSN 6620-00-816-9755
NSN 6105-01-377-0059