These cap screws and nuts are zinc-plated, which effectively resists corrosion. They feature a small, cylindrical head with tall vertical sides. The pack includes an assortment of sizes ranging from M5 x 20 to M8 x 30mm, such as M5 x 20, M5 x 30, M6 x 25, M6 x 30, and M8 x 30mm, along with M5, M6, and M8 nuts. It comes in a convenient storage case with compartments for easy organization. There's a 1-year manufacturer warranty, but customers need to register the product on the manufacturer's website.

Using these cap screws and nuts is easy. First, select the right size for your project from the assortment in the pack. When screwing in the cap screws, make sure to align them properly to avoid stripping. As for the nuts, simply thread them onto the corresponding screws until they're tight. For maintenance, keep them in the provided storage case to prevent loss and damage. Since they're zinc-plated for corrosion resistance, they can be used in various environments. However, if you notice any signs of rust over time, you can lightly sand the affected area and apply a thin layer of anti - rust paint. Remember to register your product on the manufacturer's website to get the 1 - year warranty.