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 2925-01-616-3037
NSN 5950-01-341-4838
NSN 5998-01-214-0590
NSN 6240-01-434-9656
NSN 5895-01-106-3532
NSN 5920-00-199-9498
NSN 5965-01-390-6725
NSN 5910-00-060-6374
NSN 5910-00-986-0555
NSN 6610-01-244-7192
NSN 6105-01-256-2159
NSN 5960-00-007-4179