Socket head cap screw is a type of fastener that is commonly used in various applications, including machinery, construction, and automotive industries. It is similar to a socket set screw, but has a larger cylindrical head with a socket or hexagonal drive at one end. The head is designed to be countersunk into the object being fastened, providing a smooth and flush finish. The screw has threads along its length, which are designed to be inserted into a threaded hole in the object being fastened. Socket head cap screws are typically made from high-strength materials, such as alloy steel or stainless steel, which allows them to withstand high stresses and resist corrosion. They are commonly used in applications where a strong and secure connection is required, such as in manufacturing equipment, construction machinery, and automotive engines. Socket head cap screws are often preferred over other types of fasteners because of their low-profile design and their ability to provide a high level of clamping force while occupying a small amount of space.