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 5996-01-453-6127
NSN 6105-01-461-3287
NSN 5996-00-106-6758
NSN 6220-00-547-2416
NSN 6620-00-456-0404
NSN 6240-01-302-6537
NSN 6610-00-540-8911
NSN 5998-01-034-1244
NSN 4140-00-296-9695
NSN 5915-01-338-2034
NSN 5960-01-181-2143
NSN 7035-01-290-1447