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 6105-00-792-8384
NSN 5999-00-975-5360
NSN 5910-00-146-4607
NSN 5915-00-089-0527
NSN 5905-01-617-7088
NSN 6220-01-076-5057
NSN 5895-01-379-1564
NSN 5915-01-376-2785
NSN 5960-00-469-8639
NSN 5935-00-144-8017
NSN 6110-01-602-3242
NSN 4140-01-476-7871