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 5985-00-241-6446
NSN 6645-01-423-9361
NSN 7035-01-502-6764
NSN 6240-01-082-5552
NSN 6145-00-152-9954
NSN 6220-00-858-0925
NSN 5855-01-533-0996
NSN 5915-01-593-2156
NSN 7035-01-455-7277
NSN 6645-01-123-9277
NSN 5996-01-633-7979
NSN 5935-01-551-4118