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 5990-00-254-4825
NSN 6645-01-101-2877
NSN 6610-01-590-2263
NSN 5996-01-064-0630
NSN 5920-01-259-7410
NSN 5925-01-150-4465
NSN 6145-01-372-3585
NSN 6645-01-473-9179
NSN 6105-01-372-9157
NSN 6110-01-464-4337
NSN 5930-01-101-6625
NSN 6130-00-957-4815