Adapter has 0.500 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 6620-00-919-6121
NSN 6150-01-249-7306
NSN 4140-01-364-4113
NSN 6240-01-147-5424
NSN 5895-01-032-6691
NSN 6135-01-159-3032
NSN 7035-00-275-5604
NSN 5835-00-823-6116
NSN 5835-01-090-0784
NSN 5985-00-156-4536
NSN 5950-01-106-6641
NSN 5910-01-567-5232