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 6645-00-960-6594
NSN 6650-01-122-0169
NSN 5925-01-008-8520
NSN 5930-01-140-8721
NSN 6150-00-216-6542
NSN 5960-00-484-7728
NSN 5999-01-394-9419
NSN 5915-01-259-5705
NSN 6320-01-481-7322
NSN 5960-00-529-2704
NSN 5895-01-089-0551
NSN 5999-00-642-9021