TrainLarry,

Thanks for the references. Mine is definitely not 4-40. I didn't know about the #2 screws which is why I suggested it might be metric. I will have to take the screw to my local hardware store to check it out. I always like to stick to the original, no matter what I am working on. Maybe in this case I shouldn't worry about it and just use the sheet metal thread 6464 screw, which I have plenty of (?)