JohnO wrote:Aluminum will corrode when exposed to stainless in a salt environement.
BMR, I think you've just been very fortunate or your Stainless is not in direct contact with the aluminum..
I'm just saying from experience restoring boats (my third aluminum boat) that every piece of hardware that was brass caused severe corrosion, especially to my Starcraft's hull. The previous owner mounted a lot of stuff with brass, every contact point was severely pitted. The brass hardware he used to mount the transducer caused a 3 inch hole in the transom. All stainless hardware on every boat is direct contact. I've never seen stainless react with aluminum, ever. I guess I was very fortunate to have it occur on all 3 of my aluminum boats
Every manufacturer out there uses all stainless and aluminum hardware and It's not a problem. I would think boat manufacturers have done enough research that they all think stainless is ok. The only brass hardware I've ever seen on new boats is the rare brass drain plug. We get a season or 2 out of them up here.