Size of power steering drain plug

BenOwen said
I'm not sure how a photo would be helpful in this case

Murray said
I am not aware of any Mopar P/S that has a drain plug. A picture would be helpful

There is your answer why photos are VERY helpfully.

I too am not aware of a drain plug on ANY PS pump I have ever worked on from Ford, Chevy or Chrysler

My best guess is you are referring to a bolt that holds the resivour to the pump, or a front mounting bolt.

But without photos Boone can help you.