Tube end also threaded ext pipe 3/8-18
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: Stainless steel tube or pipe fittings nesoi
NSN 5855-01-388-6837
NSN 5999-01-431-1447
NSN 5996-01-074-4328
NSN 5945-01-444-2611
NSN 6620-01-216-4901
NSN 6610-01-378-8079
NSN 6105-01-322-8246
NSN 5950-01-651-1536
NSN 2925-00-294-4140
NSN 6130-01-523-3418
NSN 6650-00-555-1061
NSN 5895-01-153-2249