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 5895-01-291-0599
NSN 6105-01-094-5268
NSN 5915-01-365-6546
NSN 6150-01-131-0806
NSN 5910-00-851-8771
NSN 6650-00-344-9500
NSN 5950-00-708-2142
NSN 5930-01-547-7472
NSN 6135-00-461-3590
NSN 5910-01-424-5483
NSN 6110-01-440-2566
NSN 5905-00-994-1482