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Maybe five years ago I was issued new plates. Recently, I noticed one screw was missing. The others looked rusted so I went to remove them and one was corroded in so badly I twisted the head off. These were probably cad plated steel. I didn't know aluminum would corrode.
So bought 4 new stainless screws (M6x1.0) but later, out of curiosity I looked up aluminum-steel corrosion and was surprised to find that even stainless would likely corrode also.
https://www.monarchmetal.com/blog/galvanic-corrosion-common-questions-answered
So what should I use, nylon screws?
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