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Should I be concerned when galvanized steel comes in contact with other metals?

Zinc is a noble metal and will sacrifice itself (i.e. corrode, give up its electrons and create a bi-metallic couple) to protect most metals. So, it is recommended to insulate galvanized steel so that it doesn’t come in direct contact with dissimilar metals. Rubber or plastic, both non-conductive, are often used to provide this insulation.