Adapter has 0.562 in. Wrenching flats
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.
NSN 5930-01-613-0647
NSN 5835-00-891-2232
NSN 6220-01-500-4516
NSN 6135-00-073-8939
NSN 5920-00-189-6930
NSN 5895-00-849-5573
NSN 5975-00-296-3046
NSN 6145-01-595-4852
NSN 5935-01-215-4904
NSN 4140-00-099-9205
NSN 5950-01-611-0849
NSN 6110-01-585-9715