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 5990-01-330-4552
NSN 6320-01-476-0686
NSN 5945-01-503-7865
NSN 5895-01-187-5703
NSN 4140-00-395-2525
NSN 5999-01-073-6604
NSN 6110-01-107-2690
NSN 6610-01-200-6861
NSN 4140-00-012-3506
NSN 5996-01-327-0220
NSN 5935-01-516-5544
NSN 5895-01-462-4503