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 6620-00-538-8746
NSN 5920-01-028-1287
NSN 6320-00-242-3300
NSN 6320-01-229-6479
NSN 6105-00-236-6788
NSN 5945-00-019-0176
NSN 5935-01-440-9481
NSN 5996-01-367-2081
NSN 5920-00-384-8926
NSN 6150-00-704-4018
NSN 5996-01-209-2599
NSN 6105-01-088-1677