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 6685-01-504-9486
NSN 6150-00-374-9318
NSN 7035-01-377-7712
NSN 5985-01-313-5056
NSN 6110-01-485-0276
NSN 4140-01-431-9065
NSN 6130-00-143-7304
NSN 5915-01-089-7930
NSN 6110-01-516-7532
NSN 6110-01-108-6515
NSN 5996-00-278-5193
NSN 6135-01-633-8502