Socket shoulder screws are a type of fastener that has a hexagonal head that is designed to be tightened with a socket wrench. They also have a shoulder that prevents the screw from sinking into the material that it is being screwed into. Socket shoulder screws are available in a variety of sizes, lengths, and materials. The most common materials for socket shoulder screws are steel, stainless steel, and brass. Socket shoulder screws are used in a wide variety of applications, including furniture assembly, construction, and machinery. They are a versatile and reliable type of fastener that is well-suited for a variety of applications. Socket shoulder screws are strong, durable, and easy to install.