A340E Output Nut/Socket size


I guarantee this is documented somewhere on the world wide interwebz....but I can't seem to bring together the right combination of search terms to reveal it....

I need to remove the driveshaft flange/extension housing on an A340E from a '94 SC400. I don't have any sockets deep enough to check, and since it's recessed in the flange, I couldn't get my caliper in there straight enough that I'm confident with the measurement.

So yea, anyone know the socket size I need to get this bastard off?