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 6110-01-366-7954
NSN 6685-01-172-5482
NSN 7035-01-151-0265
NSN 6650-01-246-4262
NSN 6240-01-480-0224
NSN 5945-01-521-4212
NSN 5985-01-237-2570
NSN 6110-01-287-9394
NSN 6685-01-316-4267
NSN 5965-01-534-9961
NSN 6105-01-104-1212
NSN 5905-01-394-3728