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 5915-00-250-7912
NSN 6145-01-580-4756
NSN 5998-01-220-3030
NSN 5855-00-221-9435
NSN 5930-00-006-4253
NSN 7035-01-361-8821
NSN 6105-00-161-1834
NSN 5905-00-089-9622
NSN 7035-01-302-5359
NSN 6145-01-325-9927
NSN 5835-00-398-9678
NSN 5985-00-156-7335