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 6150-01-494-7178
NSN 5895-00-328-9314
NSN 6220-00-023-4344
NSN 4140-01-512-7286
NSN 6240-01-190-9523
NSN 6610-00-374-1563
NSN 5855-01-013-6864
NSN 6220-00-650-9880
NSN 5925-00-257-9537
NSN 6105-01-215-2339
NSN 5960-00-824-0052
NSN 2925-01-327-3069