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 6320-01-539-4789
NSN 5945-01-206-4013
NSN 5925-00-347-0566
NSN 6240-00-799-1528
NSN 6105-01-555-8757
NSN 5965-01-375-3675
NSN 5915-01-016-2707
NSN 5975-01-438-4859
NSN 5990-00-939-8890
NSN 6645-01-510-2802
NSN 5965-01-501-7987
NSN 6130-01-504-0747