Nut Materials When selecting nuts, many people first look at size or type. In reality, however, material and surface treatment are the key factors that determine the final performance. Even if two nuts are the same size, using the wrong material may result in rust, stripped threads, insufficient strength, or even rapid failure in the actual environment. Many on-site problems may seem like poor nut quality, but the real issue is often whether the correct material was selected.

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