The Machine Key 1/4 x 1/4 x 1-1/16 Form B is an undersized key made from 1045 steel, ideal for securing components in rotating machinery. With dimensions of 1/4 inch in thickness and width, and a length of 1-1/16 inches, this key ensures a precise fit for optimal torque transmission. The 1045 steel construction provides excellent hardness and wear resistance, making it suitable for high-stress applications. This key meets industry standards for compatibility and performance, ensuring reliable operation in your mechanical assemblies.