The Key 5/8 x 5/8 x 3-3/4 Form B is made from carbon steel with a plain finish, offering excellent strength and durability for various applications. This key is designed to fit into standard keyways, providing a secure connection for rotating components in machinery. With dimensions of 5/8 x 5/8 x 3-3/4 inches, it ensures a snug fit, preventing slippage and maintaining alignment. Ideal for use in automotive and industrial settings, this machine key is engineered to withstand high torque and dynamic loads, ensuring reliable performance in demanding environments.