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 6645-00-418-2133
NSN 5996-01-220-8021
NSN 6135-01-222-0703
NSN 5999-00-193-8398
NSN 6610-01-473-5678
NSN 6145-00-308-0247
NSN 5975-01-357-8564
NSN 5950-01-276-2144
NSN 5996-01-085-5031
NSN 5855-01-400-1590
NSN 6240-01-327-9468
NSN 6645-01-467-9983