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 5996-01-492-1695
NSN 5950-00-224-6064
NSN 6105-01-078-8286
NSN 6610-01-356-3435
NSN 6610-01-590-5243
NSN 6650-00-187-5388
NSN 5835-00-198-4936
NSN 6620-00-484-4662
NSN 6650-01-399-8552
NSN 5960-01-305-1874
NSN 5945-01-050-7283
NSN 5985-01-310-3121