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 6220-00-583-3193
NSN 5960-01-244-1969
NSN 6320-01-381-7023
NSN 6105-01-183-5509
NSN 5965-01-158-4187
NSN 6130-01-534-7674
NSN 6130-01-448-6393
NSN 5915-00-248-5824
NSN 6645-01-187-9368
NSN 5915-01-369-8690
NSN 5920-01-360-8310
NSN 6130-00-337-8054