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 2925-01-441-8958
NSN 5895-01-465-0611
NSN 5895-01-091-8363
NSN 5945-00-960-7367
NSN 5855-00-922-6459
NSN 4140-00-554-8570
NSN 6240-00-316-3167
NSN 5945-00-548-2053
NSN 5895-01-367-7651
NSN 6240-01-033-6941
NSN 6650-01-627-1480
NSN 6620-01-431-0706