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 5950-01-616-0521
NSN 6320-01-265-8703
NSN 5985-00-526-3469
NSN 5915-01-124-5422
NSN 6130-01-173-8855
NSN 5985-01-442-3201
NSN 5990-01-328-9846
NSN 6645-01-089-6459
NSN 6240-01-254-9448
NSN 2925-00-707-6770
NSN 6130-01-129-3959
NSN 6685-00-173-3848