Socket screws, also known as Allen screws, are fasteners characterized by a hexagonal recess in their heads. This design allows for the use of a specific tool, called an Allen wrench or hex key, to drive them into place. They are commonly used in various applications, including machinery, furniture assembly, and automotive parts, due to their ability to provide a strong grip and resistance to loosening. These screws come in various sizes and materials, such as stainless steel and carbon steel, making them versatile for different environments. Their compact design allows for easy installation in tight spaces, making them a popular choice in both industrial and consumer products.