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 6685-01-477-3890
NSN 5925-00-462-0691
NSN 6685-01-451-3937
NSN 5975-01-204-3325
NSN 6610-01-446-7635
NSN 5855-00-532-0025
NSN 5945-00-540-1052
NSN 6150-01-082-4760
NSN 5996-00-880-1941
NSN 5855-00-832-9341
NSN 5855-01-285-3483
NSN 6650-01-610-0010