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 6240-01-123-0968
NSN 5855-01-522-4471
NSN 6135-01-036-3495
NSN 5985-01-346-0803
NSN 6135-00-542-6216
NSN 5835-00-954-2833
NSN 5930-00-291-5400
NSN 5905-01-443-8508
NSN 5960-01-599-9821
NSN 6610-01-180-6359
NSN 5930-01-347-8834
NSN 5965-01-266-7968