Screws with hexagon socket head, known as enamel, set screws, and various other names. They are primarily used to fasten two components together. The fastening method involves using the tip of the hexagon socket head screw (various shapes) to secure the target object. The tip shapes include: recessed, flat, pointed, cylindrical, serrated, and W-point, with various shapes available as standard products depending on the shape of the target object.