From “J.R.” (April 2005): “I put my plates on with bronze bolts, which I get at marine stores like West Marine or BoatUS or Chesapeake Marine Fasteners.
If you spray them with CorrosionX, they don’t turn green, and they look unusual and cool.
You can also get stainless steel bolts at marine stores. If you want REALLY GOOD SS bolts, the ones to get are made of 316 SS from McMaster-Carr, but this is going a little overboard.
On my boat, where even stainless will start to corrode in some places, I use 316 bolts, etc., in those locations. Most of the stainless you see in ordinary applications is 304 or 18-8, which is not really very rust resistant.”