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 6145-01-411-5895
NSN 6645-00-052-7288
NSN 5945-00-535-2298
NSN 6320-01-449-0043
NSN 6610-01-551-6425
NSN 2925-00-188-5003
NSN 6130-00-463-7161
NSN 6135-01-378-3331
NSN 5998-01-206-5175
NSN 5925-01-287-0657
NSN 5920-00-636-4713
NSN 5920-01-260-2300