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 5905-01-199-2661
NSN 6145-00-130-8078
NSN 6240-01-556-5808
NSN 5895-00-590-8726
NSN 6110-01-114-3200
NSN 5990-01-045-7754
NSN 6320-01-317-7312
NSN 5930-01-479-7367
NSN 6220-01-556-2724
NSN 6105-01-445-0560
NSN 5950-00-026-0212
NSN 5855-00-361-0167