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 6650-01-314-5073
NSN 6135-01-090-5365
NSN 6135-00-782-6988
NSN 6145-00-296-0085
NSN 5905-00-517-9781
NSN 6105-01-583-5526
NSN 5915-00-955-1697
NSN 5990-00-790-6980
NSN 5905-01-024-4352
NSN 6105-01-224-7258
NSN 6650-01-239-2759
NSN 6645-01-542-6159