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 5985-01-304-4685
NSN 2925-01-149-0352
NSN 5915-01-345-1447
NSN 6620-00-986-0747
NSN 7035-01-537-0408
NSN 6135-01-122-4448
NSN 6220-01-086-5691
NSN 6685-01-465-4601
NSN 4140-00-547-8918
NSN 6220-01-654-4014
NSN 6620-00-568-3947
NSN 5905-00-287-7421