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 5835-01-529-3050
NSN 6240-00-900-8642
NSN 5960-00-855-7643
NSN 5960-01-252-6331
NSN 5996-01-454-4605
NSN 6610-01-616-3974
NSN 5895-01-578-7083
NSN 5905-00-871-8206
NSN 5985-01-387-2938
NSN 5998-00-443-4719
NSN 5999-01-386-5834
NSN 5925-01-189-2355