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 5920-00-728-3487
NSN 5996-01-107-5737
NSN 5960-00-689-5813
NSN 6145-01-282-8255
NSN 6135-00-309-0074
NSN 6220-01-521-7136
NSN 2925-00-486-8640
NSN 5975-01-553-2177
NSN 5999-00-390-1324
NSN 5990-01-251-7313
NSN 5905-00-114-2294
NSN 5985-01-546-4612