Been using rivets for years and always seem to be drilling out rivets... Anybody use rivnuts? Thinking about using them to mount a trolling motor base on an aluminum deck.
So the minnkota brackets always come with stainless bolts. Do I use stainless rivnuts then or aluminum?Just don't use zinc coated rivnuts in an aluminum boat with stainless screws. Seriously, they make it easy to clean a boat up, and are plenty strong.
There are two lines of thinking here. Would you rather have dissimilar oxidation between the hull and the rivnut, or between the rivnut and the bolt? I like stainless rivnuts with stainless bolts for the load bearing things like trolling motors. A little oxidation between the hull and the rivnut seems the lesser of the two evils to me. They are expensive, so I have been using aluminum rivnuts with stainless screws for the smaller things. If rivnuts are ripping out, I would think that they are not installed properly, or the hull is too thin to use them? I have only had one spin out, and I wasn't the one who installed it, so I can't tell you if poor technique was a factor in the failure.So the minnkota brackets always come with stainless bolts. Do I use stainless rivnuts then or aluminum?