Not selling screws
I'm not trying to sell anyone on using either screws or rivets. Both are adequate for most purposes and sometimes rivets are much prefered. I was reminded of this last week when trying to put two fairly thin pieces of metal together. If the metal is not thick enough to take 5 or 6 good threads, so the screw can get a good bite, you are better off using rivets. The rivet mushrooms inside the metal and provides its own "washer" while the head comes flaired out. This spreads the load over a larger area on the thin metal surface. I used pop-rivets when I moved the windex, at the mast top, aft to make room for the radio antenna. The metal was all thin and light weight and the aluminum rivets were easy to use and I don't plan to move any of the pieces (see photo). I put this project here, last year, on the projects page and on my personal sailing site "Northstarsailing". We have been talking about attaching things to the mast and mast base which are quite thick and will hold a lot of threads, or are heavy. My personal preference, and I'm not trying to sell anyone else on this, is to use screws in this area because I know I will be opening the mast again to add other "toys" like a deck light. So if you like rivets like Dave or you like screws like Jonathan, just make sure you are comfortable with what you are doing before you start, or ask lots of questions here.Brigg