What size nuts for a clock?

[pinballdude]

I posted this sometime ago. I tried Wayne's Neon Clocks but was told their nuts fit more modern clocks.
What size nut is needed to fasten the hands on vintage Coke clocks? Is it a certain inner diameter with a certain thread?
I would like to be able to go to the hardware store and request what I need without having to take the clock with me and having to try many nuts to find the right one. I have 2 clocks that I need these for.
Thank you.
Terry

[BONOVOX]

lol... i read the title real fast and laughed...  re read it again and saw what you meant. lol

sorry

[cola62]

That is a tough one. There are several different thread sizes that were used depending on the clock motor shaft.  I had the same issue a while back. I contacted several of the companies that sell the replacment motors but none of them would sell just a nut. I ended up going to an Ace Harware and buying a regular hex nut that fit and grinding off the corners to round it out. The original nuts are usually brass and round with no corners.