On Mon, 24 Dec 2007 05:33:29 -0600, Geoff Schultz
wrote:

I hope that you're not planning on using stainless rivets on an aluminum
mast/boom! You're looking at serious corrosion problems if you do that.

I've had this discussion with professional riggers. The best advice
I've gotten is to coat the stainless fastener with silicone caulk
before inserting it into the mast. Stainless fasteners are much
stronger than aluminum and much more readily available than exotics
like monel.