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 6105-00-643-0484
NSN 5998-01-153-2689
NSN 5905-01-285-2006
NSN 5999-00-225-2833
NSN 5985-01-485-3062
NSN 5945-00-145-9802
NSN 5985-01-485-1006
NSN 6240-00-660-8849
NSN 5935-00-155-4662
NSN 5930-01-424-3303
NSN 6145-01-654-5842
NSN 5975-00-817-1781