I went to the local hobby shop and they had small brass screws. I think they are #1, 3/8" long. They have a lot of neat stuff. If you want a few it's ok, but if you want 100 then some of the online sites are better. Often all you need is a one or two, then it's off to the hobby shop. I picked up some flat black Tessors enamel paint while I was there. I like it for the back of lens boards.