A screw clamp is a type of fastening tool used to hold objects tightly together. It consists of a metal frame with a screw mechanism that allows the user to adjust the pressure applied to the items being clamped. Screw clamps are commonly used in woodworking, metalworking, and various DIY projects to secure materials while cutting, gluing, or assembling. These clamps come in various sizes and designs, making them versatile for different applications. They are often made from durable materials like steel or aluminum, ensuring strength and longevity. Popular types of screw clamps include C-clamps and bar clamps, each suited for specific tasks.