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 5998-01-484-4690
NSN 6320-00-857-4073
NSN 5935-01-007-5804
NSN 5925-01-619-7736
NSN 6650-01-631-1955
NSN 5920-01-003-8110
NSN 5985-01-106-3968
NSN 5965-01-449-1092
NSN 5945-01-255-7968
NSN 5915-01-335-0187
NSN 6105-00-903-4010
NSN 7035-01-574-3087