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 5975-01-604-9693
NSN 6645-01-202-2993
NSN 5925-01-269-0789
NSN 2925-00-440-9316
NSN 6110-00-805-5529
NSN 5985-00-090-0740
NSN 6110-00-583-9821
NSN 5999-01-409-2834
NSN 6150-01-211-9794
NSN 5990-01-219-9018
NSN 6320-01-652-3806
NSN 6320-01-056-1164