Well, not certain of the actual situation. But here is a small chart giving nominal dimension for screws. If the rod needs to slide in a 1/8" (.125) hole, I'd start with a #4. Kodak used standard threading in most cases, so I'd imagine a #4-40 is a good place to start. #5 is an oddball size, rarely seen. You could get a #4 and a #6 and see which one fits. Then find a long screw, or thread the end of a proper sized rod and see if you het the right threading.
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