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 6610-01-256-7938
NSN 6145-00-106-0611
NSN 5950-01-512-5101
NSN 5975-01-088-9053
NSN 5985-01-593-3575
NSN 7035-01-491-9867
NSN 2925-00-330-7316
NSN 2925-01-338-7126
NSN 6620-01-155-3062
NSN 5930-01-155-5402
NSN 5930-01-211-6123
NSN 6320-01-441-1371