How do non-standard screws perform in wet or corrosive environments?

Most standard screws are made of materials such as carbon steel or ordinary stainless steel, which may not perform well in wet environments. Carbon steel is easily corroded by moisture, oxygen and salt, causing rust on the surface, which in turn affects the stability of the connection. Although stainless steel has good corrosion resistance, it may still suffer from pitting or crack corrosion in some high-salt or acidic environments. In order to improve the durability of non-standard screws in wet or corrosive environments, many manufacturers use special anti-corrosion treatment processes.
Surface treatment is an important measure to improve the corrosion resistance of non-standard screws. Common treatment methods include galvanizing, electroplating, black oxidation and phosphating. These processes can form a protective film on the surface of the screw to prevent moisture, oxygen or corrosive substances from directly contacting the metal surface, thereby slowing down the corrosion process. For example, galvanized screws can effectively prevent rust, especially in neutral or mildly corrosive environments. Electroplating treatment further improves its corrosion resistance by adding a layer of corrosion-resistant metal, such as nickel or chromium, to the surface of the screw.
For applications that require high corrosion resistance, manufacturers may use stainless steel, titanium alloy or other corrosion-resistant alloy materials that perform well in wet or corrosive environments. For example, 304 and 316 grade stainless steel screws can effectively resist salt spray corrosion in marine environments and are widely used in ships, marine equipment and other fields.
In addition to the material and surface treatment, the design of the screw is also an important factor affecting its anti-corrosion performance. For example, the accuracy of the thread and the uniformity of the tightening force are directly related to the sealing between the screw and the connector. If the screw is not installed properly, it may loosen or leak, which will accelerate the occurrence of corrosion. Therefore, correct installation and regular maintenance are also necessary means to extend the service life of non-standard screws in humid or corrosive environments.
The anti-corrosion performance of non-standard screws depends not only on the material and surface treatment, but also on its specific application scenarios. For some special environments, such as high salt, high acid and alkali or extremely humid areas, it is crucial to choose the right anti-corrosion materials and design solutions. In general, by adopting appropriate materials, surface treatment and design processes, non-standard screws can perform excellent performance in humid or corrosive environments, ensuring stability and reliability in long-term use. The correct selection and use of non-standard screws can not only improve the stability of the connected parts, but also effectively extend the service life of equipment and machinery.