Grade 5 fasteners are made from medium-strength carbon steel, typically hardened to provide greater tensile strength than standard bolts. When finished with plain plating, these fasteners are exposed to the environment without additional coatings, offering a simple, functional solution for many applications. The lack of plating means there's no barrier between the steel and external elements, which can lead to natural corrosion over time. However, this uncoated surface provides better weldability and allows for more precise torque applications, as there’s no extra layer that could interfere. Additionally, plain-plated fasteners can be more cost-effective in environments where corrosion resistance isn't critical.
