Screw surface treatments In many industrial applications, the durability of screws is not determined only by material and strength—surface treatment also plays a critical role. For example, a carbon steel screw without any treatment may rust quickly. However, with proper surface treatment, its corrosion resistance can be significantly improved. Different surface treatments vary greatly in corrosion resistance and application environments. Therefore, when selecting screws, sur

Thread Classes 2A / 3A and 55° vs 60° Thread Angles When selecting screws, many people first look at size, material, or head type.However, in industrial equipment and precision mechanisms, the factors that truly affect fit quality and service life are often more subtle technical details: Thread Class Thread Angle These parameters determine the precision of the fit between the screw and the threaded hole, the clearance between threads, and the stability under vibration or load

When selecting screws, many people only check whether the size and thread pitch are correct.As long as it threads in, they assume it’s fine. But in real-world applications, the real differences often appear after some time: The tool keeps slipping The screw head becomes rounded Threads start stripping after a few installations It feels tight but slowly loosens The screw head protrudes and interferes with other parts These issues are usually not caused by poor material qualit

Screws When people choose screws, they usually look at size, thread pitch, and head type first.But in real applications, what truly determines whether a screw will fail is often the material. Rust, stripped threads, breakage, deformation, or loosening over time—many of these issues are not caused by poor machining, but by choosing the wrong material from the start. --- 1. Why Does Screw Material Matter So Much? In use, a screw typically faces multiple factors at the same time