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 2925-01-263-3638
NSN 5915-00-930-5322
NSN 5915-01-422-1861
NSN 2925-01-500-0730
NSN 6320-01-506-9439
NSN 5895-01-555-3254
NSN 6685-01-347-4648
NSN 5985-01-417-8860
NSN 6105-01-131-8095
NSN 6320-00-405-2348
NSN 5998-01-293-8336
NSN 5910-00-485-7820