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 6320-01-170-4068
NSN 2925-00-888-5111
NSN 5835-00-240-5044
NSN 5960-01-410-8177
NSN 5835-00-111-2953
NSN 7035-00-320-5644
NSN 5915-00-646-6187
NSN 7035-01-521-9817
NSN 6105-00-816-9397
NSN 4140-00-911-1485
NSN 5920-01-159-3791
NSN 6150-00-104-8035