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 5920-01-591-2410
NSN 5998-00-244-8629
NSN 5835-01-507-0731
NSN 6650-00-231-2744
NSN 5905-01-042-2541
NSN 7035-01-179-5667
NSN 5975-00-470-2320
NSN 5975-01-264-6803
NSN 5960-00-014-3445
NSN 6240-01-322-0493
NSN 6240-01-495-1912
NSN 6320-01-512-2031