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 5998-01-621-9387
NSN 6145-01-556-8963
NSN 5985-01-348-8760
NSN 4140-00-657-4964
NSN 5975-01-099-6418
NSN 5895-00-776-6079
NSN 5985-00-209-5459
NSN 5895-01-456-5877
NSN 6685-00-074-2471
NSN 6610-00-492-1508
NSN 5960-01-605-9921
NSN 5965-01-039-8557