![]() The biggest factor that will quicken the process of rusting is water. Buying the right screws will allow for a lasting product that won’t rust. If you go for the more expensive option like stainless steel, it is likely you won’t have to resort to other options to prevent rusting. This is the easiest and biggest way to prevent rusting – buy the right screws at the start of your project. There are a few extra ways to prevent fastener rusting that you can do on top of already having suitable screws. This grade offers maximum corrosion resistance.Ĭheck out this video for some more info on choosing the proper screws for your projects: The 316 grade is for extreme environments, such as for decks near the sea. 304 and 305 grades are widely available, but the 305 grade offers slightly greater resistance to corrosion. There are a few different grades of stainless steel screws that are important to look at when thinking about rust prevention. These screws don’t have a coating that may or may not wear down, and for this reason, they will last longer than galvanized screws. Many people use stainless screws for decks because the screw is not just coated with rust-resistant material, but is made entirely of it. The stainless steel screws cost about twice as much as the galvanized screws, but they offer more protection from rust. In regards to being resistant to corrosion, hot-dipped are more resistant because of their thicker coating. Mechanically galvanized screws have a thinner coating consisting only of zinc. Hot-dipped galvanized screws have the thickest coating, consisting of both iron and zinc. ![]() There are hot-dipped, and mechanically galvanized screws. Lastly, there are two types of galvanized screws. The inside of the screw is made of black steel, which is very susceptible to corrosion and rusting.Įven if there is one small hole in the zinc coating, the entire screw can eventually disintegrate, but even then, it may take a while. The downside of these screws though, is that only the outer coat of the screw is rust-resistant. Galvanized screws are the least expensive screws we are discussing today, which makes them a nice option. Overall, galvanized screws are the most popular because they are both corrosion-resistant and affordable. This layer of zinc prevents the iron from reacting with the oxygen and water in the air, therefore stopping the problem before it even begins. These screws are resistant to corrosion because they are coated with a thick layer of zinc. Galvanized screws are the first screws we will be talking about today that are resistant to rust. Certain screws are also stronger and may last longer, but the cost will also be greater. Even though a wide variety of screws are made to be resistant to rust, some screws offer more protection than others. ![]() The first step to rust prevention is buying the right screws. It seems like an impossible problem to solve, but not to worry – keep reading for information on the most popular screws to use when trying to prevent rust. ![]() The majority of screws are made of metal, and a lot of locations have either rain or moisture in the air. Reading about the process of rusting may be disheartening when thinking about what screws to buy. A few things that can speed up the process of rusting is water and salt. The screw can also eventually disintegrate. The process of rusting will start when that relationship (the relationship between iron and oxygen) is initiated and will cause the iron to corrode. Rust occurs when iron (or any of its alloys, including steel) is exposed to oxygen and water (this can be moisture in the air). Rust is a chemical compound, and its scientific name is iron oxide.
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