Socket head cap screws are a type of fastener that has a hexagonal head that is designed to be tightened with a socket wrench or Allen wrench. They have a cylindrical shank with external threads that are designed to be threaded into a drilled hole. Socket head cap screws are available in a variety of sizes, lengths, and materials. The most common materials for socket head cap screws are steel, stainless steel, and brass. Socket head cap 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 head cap screws are strong, durable, and easy to install.