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 5985-01-116-2604
NSN 5935-01-192-5278
NSN 6620-00-160-0844
NSN 5930-01-656-2904
NSN 6240-01-371-3436
NSN 6110-00-144-6763
NSN 5905-01-272-8683
NSN 6610-01-094-8442
NSN 6240-01-058-1392
NSN 6105-01-424-0275
NSN 5930-00-181-5885
NSN 7035-01-204-5092