Seems to be a difference of opinion. I've installed several but that doesn't make me an expert. I've seen aluminum rivets, stainless rivets, machine screws and hex head bolts.
My opinions on each. Aluminum rivets - not strong enough. Will eventually work loose or break. Stainless rivets - my choice. Very, very low potential to work loose or break. Coat with TefGel to minimize dissimilar metal corrosion. Downside - requires expensive rivet tool. Machine screws - some potential to work loose. Once they work loose, bad things can happen. I don't have a real issue with them as long as they're coated with red thread locker. Hex head bolts - some potential to work loose but, in my opinion, a better choice than machine screws. Coat with red thread locker. If you need to remove them, easier than machine screws. They can also be tightened more than machine screws. Bottom line - if you don't have a Big Daddy rivet tool, screws or bolts are fine. Just use red thread locker and inspect them every now and then. Hope this helps. Dennis C. Touche' 35-1 #83 Mandeville, LA
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