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 5905-01-590-6995
NSN 5985-00-806-1961
NSN 5996-01-227-2555
NSN 6145-00-403-9458
NSN 5920-01-603-6441
NSN 6620-01-133-2800
NSN 5975-01-528-8520
NSN 5960-01-040-0934
NSN 5835-01-338-5176
NSN 5905-01-603-5261
NSN 5945-00-452-9428
NSN 5905-01-243-6743