I have a Delta 10" table saw, model 36-450. I misplaced the arbor nut wrench, and when I went to order another (along with a starting to round out arbor nut) I found the parts and many others were not available. Also, what is the size of the arbor nut? I think it's 15/16. The arbor nut is on the right side and is NOT a left handed thread.