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 6620-00-098-5652
NSN 6610-01-406-4985
NSN 5996-01-094-5587
NSN 5985-01-106-2800
NSN 6610-01-136-1189
NSN 6150-01-495-8704
NSN 5935-00-594-2901
NSN 5895-01-646-0767
NSN 5996-00-324-8952
NSN 6645-01-592-2557
NSN 5895-01-173-6109
NSN 5930-00-754-4110