The Machine Key M20 x 12 x 28 Form B is an undersized carbon steel key designed for securing rotating components in machinery. Measuring 20mm in width, 12mm in height, and 28mm in length, this key is ideal for applications requiring precise alignment and torque transmission. Made from high-quality carbon steel, it provides excellent strength and durability, making it suitable for various mechanical assemblies, including motors and gearboxes. This key meets industry standards, ensuring reliable performance under load. Its robust construction makes it a valuable component for engineers and maintenance professionals.