https://www.drywallscrew.net/news/what-to-do-if-the-screw-is-rusty.html
What to do if the screw is rusty - Jiaxing MAXEA Hardware Manufacturer Co., Ltd
The stainless steel screw is formed by a very thin, strong, dense and stable chromium-rich oxide film (protective film) formed on its surface to preve...
what to do