I removed the six outer allen bolts to paint them matte black and unfortunately lost one. I went to my local Home Depot and wasn't able to find anything like them in that size. Does anyone know the sizes and or were I can find a replacement?

 

Try a smaller hardware store, like your local Ace Hardware or Do it Best. They can provide the service that the "big box" places can't... and you can buy just what you need.

 

If trying a smaller hardware like Ron suggested doesn't work out, then try contatcting Marsello at SHR. I'm positive he can help you out.

 

This!

Marcelo is a great guy and knows how to treat his customers. I'm sure he'd put one in the mail for you no problem.