Full Dog and Half Dog Points have an extended tip that fits into a hole drilled in a shaft. Use these for permanent location of one part to another. They often replace dowel pins. Length is measured in overall length including the tip. Often used as adjusting screws, Flat Point, Oval Point, Nylon Tip and Brass Tip screws cause little or no damage to the contact surface. These screws are good for thin wall thickness and soft plugs and designed for frequent resetting and relocating. With flat points, greatest contact is provided on shafts with areas that are ground flat. Nylon patch acts as thread locker.