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 5935-00-493-6521
NSN 5835-01-259-0815
NSN 6150-01-482-7500
NSN 5835-01-412-0344
NSN 6650-00-702-3560
NSN 6610-01-359-0008
NSN 5985-00-538-3790
NSN 6620-00-583-2687
NSN 6105-01-173-5306
NSN 5935-01-347-5853
NSN 5985-01-287-3878
NSN 5920-01-215-0497