A fitting with pipe threads having a female connection inside of a male connection, used in conjunction with another fitting, to connect in the same line, two pipes of different sizes.
NSN 6130-01-593-1228
NSN 4140-00-883-8919
NSN 5960-00-258-9292
NSN 6130-01-456-6013
NSN 5935-01-383-8209
NSN 5935-00-840-4904
NSN 5905-01-258-6847
NSN 6150-01-157-8726
NSN 5895-01-472-6771
NSN 5945-01-141-5570
NSN 5945-00-430-5347
NSN 5915-00-824-0196