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 5965-00-567-7679
NSN 5895-01-119-3942
NSN 5975-01-096-8149
NSN 5985-01-518-2788
NSN 6130-01-096-2280
NSN 5930-01-609-1945
NSN 6105-01-541-7621
NSN 5975-00-915-5834
NSN 5960-00-856-8336
NSN 5925-01-231-9509
NSN 5965-01-359-0384
NSN 6240-01-172-9897