Cage 62531 is the oem
A straight pipe fitting having a different size connection on each end. It is designed to join two pipes of different sizes or two pipe fittings of different sizes. Excludes bushing (as modified).
NSN 6130-00-541-8468
NSN 5990-01-380-7815
NSN 5999-00-983-6207
NSN 6145-01-616-8755
NSN 7035-01-646-0272
NSN 5835-01-118-4690
NSN 5895-00-338-2279
NSN 5975-01-173-5877
NSN 5930-01-512-8227
NSN 6240-01-449-1387
NSN 5990-01-481-3080
NSN 5920-01-070-8843