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 6320-00-841-2279
NSN 6220-01-647-4660
NSN 4140-01-634-0330
NSN 5965-01-200-6613
NSN 5855-01-069-1341
NSN 5855-00-912-3885
NSN 6150-01-058-1014
NSN 6220-01-201-4117
NSN 5920-01-137-3757
NSN 5935-01-053-0318
NSN 5910-01-283-9584
NSN 6685-01-304-5716