First line has crimp fitting
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.
Classification: Copper alloy tube or pipe fittings
NSN 5920-01-372-1322
NSN 7035-00-978-7837
NSN 6610-01-497-4523
NSN 5950-00-036-9071
NSN 5998-01-522-8415
NSN 5925-01-233-5711
NSN 7035-00-849-5526
NSN 5960-01-246-4643
NSN 6650-01-484-9505
NSN 5855-01-500-2531
NSN 6645-01-138-3855
NSN 6145-01-112-0397