wood screws have a head, a shank and a tip. The shank is typically partially threaded, meaning the threading only extends about three-fourths of the way down the body. With that said, some wood screws have a fully threaded shank that extends from the head all the way to the tip.
Many wood screws also have a tapered head. In other words, the head is blended into the shank. The area where the head of a wood screw meets the shank is tapered. This tapered design allows the head to rest flush with the surface of the workpiece on which wood screws are installed.
You should also consider the material when shopping for wood screws. Many wood screws are made of steel. Steel, in fact, is the most common material in which all fasteners are made — and wood screws are no exception. You can find wood screws made of stainless steel and high-carbon steel. In addition to steel, other materials for wood screws include titanium, brass and aluminum.