316 stainless steel; .25 tube end connects to inverted nut with sleeve
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 5925-01-281-5001
NSN 5925-00-489-1537
NSN 6610-00-967-3054
NSN 5999-00-028-6947
NSN 5945-00-421-3169
NSN 6650-01-508-7817
NSN 6320-00-070-4544
NSN 6240-00-116-7442
NSN 5950-00-349-1544
NSN 5996-01-261-6758
NSN 2925-00-295-8109
NSN 5915-00-171-1812