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 6320-01-312-3620
NSN 5835-00-092-1136
NSN 5960-01-333-1828
NSN 2925-01-463-3899
NSN 5999-01-430-7175
NSN 5985-00-499-6323
NSN 5998-01-599-9907
NSN 6320-01-033-6624
NSN 5965-01-592-0153
NSN 5855-01-469-6123
NSN 5975-01-429-1232
NSN 5965-00-463-3900