Screws and nails are both common fasteners used for broad applications. CNC machining can make fasteners in various form and designed specifications become the exact product. A nail differs from a screw in the shank, the former is smooth and the latter has threads. So the nail is often be fastened to an object using a hammer or other force, while the screw requires a screwdriver or threaded holes in the material. When you have something that has sideways pressure where the material tends to move left or right, the nail should be the first choice, if the material may separate from the top or bottom, a screw is better. Most construction nail materials are steel, nails can also be made out of stainless steel, brass, copper, and aluminum. In some cases, surface finishes will be applied on the nails, such as phosphate coating, zinc plating, galvanization, etc. Common types of nails including common nail, box nail, brad nail, finishing nail, there are also framing nail, roofing nail, flooring nail, and drywall nail for specific uses.