Originally Posted by Mike B
Then why has ever outboard engine I've ever seen use stainless steel screws into cast aluminum?
Finish durability and the factory can apply any suitable anti-seize or anti corrosion product on the threads as they please during assembly.
Some factories don't care and if it buggers up in a few years, then the service department of the dealership makes more $ fixing it. Dealerships like certain designed in failures.