they should be if the hole is clean and use aluminum alloy ones.
https://www.amazon.com/Flat-Head-Galvanized-Installed-Materials-Fiberglass/dp/B097QWHQBD/ref=sr\_1\_18?c=ts&keywords=Rivet+Nuts&qid=1648761249&refinements=p\_n\_material\_browse%3A17548942011&s=industrial&sr=1-18&ts\_id=16410051