I need a longer version of the screw on the back of my servo but I can't figure out whether it's metric inch or anything else.
Its one of those 4 screws that keeps the back case on and holds the servo together. The threads appear to be fewer. I'd say 30 threads per inch, and a diameter around 1/16in.
Here is an image of the screw.
The guy at the hardware store couldn't figure it out either.