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 5985-00-259-5757
NSN 5998-00-988-9270
NSN 5960-00-847-3752
NSN 6240-01-108-6195
NSN 5905-00-351-6371
NSN 4140-01-226-8933
NSN 7035-01-106-3476
NSN 6110-01-227-8597
NSN 5835-01-163-4215
NSN 5915-01-517-6528
NSN 6685-00-719-8313
NSN 5985-00-100-4134