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 5996-01-323-7763
NSN 5915-00-142-6912
NSN 7035-01-336-0464
NSN 2925-01-416-6927
NSN 5965-01-162-8689
NSN 6105-00-835-7758
NSN 7035-00-079-7189
NSN 6320-01-067-0474
NSN 5990-01-507-1479
NSN 5925-01-120-3837
NSN 4140-00-816-8820
NSN 6320-00-676-9387