Is the clean-out screw, on the drum, a common thread or do I need to order it specifically from Traditions.

I don't need one, but if I ever lost it

I don't know the thread Johnnyo. But take it to a hardware store and find a matching socket set screw to keep with your gear. They will have them in standard thread and metric. Get two or three, they're cheap. Also get a matching Allen wrench - also cheap.

I believe it is a common thread. But like Semi said, take it in to the store and mate it up with a nut to see what thread it is then you will know for sure.

Right! I'll see if I can get a match. I would assume that its metric thread.

Was able match the thread. Turns out a 5M x 5 mm Hex screw works.