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 5950-01-065-7520
NSN 6320-01-067-0474
NSN 6105-01-552-3533
NSN 6685-01-346-2213
NSN 5985-01-419-6178
NSN 5910-01-146-1287
NSN 6130-00-578-6110
NSN 5910-01-563-1376
NSN 5945-00-257-2073
NSN 5855-00-832-9341
NSN 5996-00-072-4617
NSN 5999-01-034-2424