These Daggerz screws are easy to use. First, for light metal - to - light metal connections, position the materials where you want to join them. Then, use a 1/4' hex driver to start the screw. Thanks to the rapid piercing point, it will begin quickly. The slotted head allows you to use other appropriate drivers if needed. When driving, the hex washer head provides stability and helps keep the connection tight. Be careful not to overtighten as it might damage the materials or the screw. As for maintenance, since the zinc finish offers some corrosion resistance, in normal environments, you don't need to do much. But if you notice any signs of rust, you can gently clean the screw with a dry cloth. If the application is in a more humid or corrosive environment, you might want to consider additional protective coatings.