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 4140-01-339-5355
NSN 5930-01-168-9901
NSN 6135-01-218-3660
NSN 5910-00-129-6266
NSN 6130-00-815-2293
NSN 6150-01-145-5156
NSN 5855-01-079-1259
NSN 5935-01-551-0789
NSN 5915-01-263-1880
NSN 5990-01-560-0896
NSN 6240-00-498-7669
NSN 6685-01-462-1164