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 6240-01-382-3756
NSN 5935-00-237-0044
NSN 5990-01-465-9235
NSN 5895-00-108-8474
NSN 5915-00-605-7560
NSN 5915-01-303-6641
NSN 5910-01-605-7651
NSN 4140-01-474-1651
NSN 5835-01-531-0379
NSN 6685-01-344-4452
NSN 6645-01-467-3182
NSN 6610-01-421-4396