The Machine Key 1/4 x 1/4 x 3 Form B is an oversize key made from high-strength carbon steel, designed for secure shaft and hub connections. This key measures 1/4 inch in width, 1/4 inch in height, and 3 inches in length, providing a robust solution for various mechanical applications. Its Form B design ensures a snug fit, preventing slippage and ensuring reliable operation in machinery. Ideal for use in motors, gearboxes, and other rotating equipment, this machine key meets industry standards for quality and performance.