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 5990-01-184-6830
NSN 6135-01-354-5535
NSN 5945-01-292-2367
NSN 5920-01-215-0497
NSN 5930-01-364-0510
NSN 6220-00-186-8565
NSN 5935-01-092-9966
NSN 5915-01-154-9807
NSN 2925-01-197-7864
NSN 6620-01-361-7775
NSN 5920-01-464-4348
NSN 7035-00-337-8745