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 6135-01-069-2482
NSN 5990-01-132-4156
NSN 5960-01-370-4285
NSN 5930-01-519-5896
NSN 5990-01-595-9441
NSN 6620-01-509-8597
NSN 5998-00-554-9725
NSN 5905-01-472-2366
NSN 5985-01-544-3240
NSN 4140-00-087-0100
NSN 6220-01-227-1917
NSN 6650-01-025-7425