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 6150-01-225-3217
NSN 6620-00-905-8530
NSN 6645-01-442-6476
NSN 2925-00-386-8745
NSN 4140-01-495-5623
NSN 5965-00-001-7593
NSN 5920-01-394-5003
NSN 6685-01-050-8759
NSN 5855-00-631-4565
NSN 6135-01-417-6539
NSN 6130-01-175-7328
NSN 5998-00-966-6405