Allen screws, also known as hex screws, are fasteners characterized by a hexagonal socket in their heads. This design allows for the use of an Allen wrench or hex key, which fits snugly into the socket, providing a strong grip for tightening or loosening the screw. They are commonly used in various applications, including furniture assembly and machinery. These screws are favored for their ability to be tightened without slipping, making them ideal for high-torque situations. Allen screws come in various sizes and materials, ensuring compatibility with different projects and environments, from household items to industrial equipment.