I and some others recommended some coated bolts, and they are all some sort of zinc coated. Here’s another way to look at it. Military trailers such as M1101/M1102 are all aluminum and are bolted, granted they are huck bolted, but the bolts they use are steel huck bolts encased in a Zinc Plated Clear Chromate sleeve and they don’t use special liquids or rubber/Nylon washers etc. The civilian version of these trailers the Schutt Xventure offer a 10 year warranty on the frame and are built exactly the same way using the same bolts and they’ve never had a failed frame reported.
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