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 5998-01-135-5289
NSN 5990-00-689-5736
NSN 5915-01-310-7357
NSN 6105-01-188-7292
NSN 5975-01-091-0124
NSN 6685-01-152-6003
NSN 5915-00-233-6346
NSN 5905-01-349-4168
NSN 5925-01-629-0896
NSN 5895-01-648-0659
NSN 6320-01-631-7828
NSN 6150-01-483-1129