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 6685-01-147-4462
NSN 6150-01-385-5308
NSN 5975-00-932-5591
NSN 5910-01-494-8386
NSN 6685-01-304-0927
NSN 5998-01-388-6651
NSN 6105-01-111-3043
NSN 5895-00-403-1938
NSN 6685-01-323-9430
NSN 6130-00-933-5579
NSN 5965-01-147-5847
NSN 6685-00-869-8524