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 6130-00-161-2418
NSN 6620-00-464-6105
NSN 5905-00-511-2134
NSN 6620-01-125-8904
NSN 6105-01-198-0388
NSN 5910-00-163-0120
NSN 6145-01-643-0488
NSN 5996-01-301-4855
NSN 6320-01-054-3046
NSN 5910-01-200-8413
NSN 6145-01-261-1940
NSN 6135-00-985-7846