The Button Head Socket Cap Screw is a sleek and functional fastening solution for a variety of applications. Made of durable stainless steel with a black passivate finish, it offers both strength and corrosion resistance. Compliant with ASME B18.3 standards, this screw features a 4-40 thread size and a hex socket drive type for easy installation. With a length of .3125 inches, it is ideal for securely fastening components in place. Designed for convenience and reliability, this screw is a versatile choice for industrial and DIY projects alike.