Matl is monel
An adapter having standard pipe threads on one end or an unthreaded end designed to accommodate a pipe. The other end has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. It is designed to join a pipe or pipe fitting to a tube or tube fitting in a straight line.
Classification: Copper alloy tube or pipe fittings
NSN 6220-00-136-0017
NSN 6110-01-187-4379
NSN 5935-01-222-2270
NSN 5945-01-364-7904
NSN 6645-01-526-8782
NSN 6105-00-012-8278
NSN 5855-01-519-7929
NSN 6685-01-336-8667
NSN 5998-00-050-0768
NSN 6240-01-156-5549
NSN 5835-00-113-6090
NSN 5990-01-643-4167