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 5930-01-579-9560
NSN 5915-00-432-6333
NSN 5895-01-266-1666
NSN 5905-00-146-0078
NSN 6130-01-582-0393
NSN 6130-01-389-4002
NSN 6220-01-546-6371
NSN 5965-01-100-4645
NSN 5835-01-090-0784
NSN 6220-01-049-5375
NSN 5960-00-269-4762
NSN 5985-00-152-6507