I have actually made them by dipping a toothpick into white glue (Elmers) and depositing a tiny amount onto the surface to be revitted. Uniformity is the problem here, hard to get more that 3 or 4 to look alike, works good where you need one or two though.
When I needed a bunch of them I'd go here and buy them already made -
augmentables pages
- They've got pretty much all you need in the way of model nuts and bolts, etc. Most of the time the 1/4 scale or 1/48 scale works for me.
razorboy