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 2925-01-341-0457
NSN 6685-01-654-8070
NSN 6220-00-218-0857
NSN 2925-01-317-6973
NSN 5930-01-206-4659
NSN 5950-01-468-5431
NSN 6320-01-631-7828
NSN 5855-01-499-8692
NSN 5975-01-424-1216
NSN 5920-00-156-9230
NSN 5915-01-147-3023
NSN 6610-01-085-6947