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 5945-00-636-9813
NSN 7035-01-545-2966
NSN 5895-00-891-2291
NSN 5950-00-658-3170
NSN 6240-00-760-0374
NSN 6130-01-323-3096
NSN 5990-01-529-6347
NSN 6220-01-079-9623
NSN 6610-00-596-9883
NSN 5835-01-495-0595
NSN 6650-01-321-8823
NSN 6645-01-524-7027