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 6650-01-567-7265
NSN 5835-01-521-0298
NSN 7035-00-938-8289
NSN 6135-01-074-8220
NSN 6145-01-620-7134
NSN 5930-01-292-2079
NSN 5960-01-170-4057
NSN 6150-01-391-0723
NSN 5935-01-245-9871
NSN 6610-01-435-2935
NSN 7035-01-527-1236
NSN 6145-01-438-0368