Cleanliness shall be in accordance with mil-c-52211 for oxygen service
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 2925-01-233-8545
NSN 5835-01-187-8986
NSN 6320-01-618-7800
NSN 4140-01-337-7695
NSN 6220-01-184-1851
NSN 6105-01-304-0172
NSN 5960-01-016-5387
NSN 6685-00-072-6789
NSN 6320-00-433-2773
NSN 6685-01-501-3970
NSN 5999-00-543-0977
NSN 5925-01-158-0762