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 7035-01-633-9537
NSN 6135-01-151-2705
NSN 2925-00-891-5959
NSN 5975-00-379-2388
NSN 6130-01-211-7121
NSN 6685-01-599-3161
NSN 6610-00-987-9716
NSN 7035-00-834-2090
NSN 6135-01-097-9317
NSN 6320-00-242-3300
NSN 5990-01-027-8260
NSN 5910-01-084-8277