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 5895-00-736-8814
NSN 5935-00-446-8811
NSN 5985-00-193-3501
NSN 6610-01-085-6947
NSN 6610-00-681-0590
NSN 5895-01-177-7395
NSN 5996-01-278-2909
NSN 6135-00-782-0930
NSN 5985-01-501-9997
NSN 6105-01-522-1880
NSN 6620-01-201-8221
NSN 5996-00-432-5171