The Machine Key measures 5/8 x 5/8 x 3.15 inches and is crafted from carbon steel in an undersize form B design. This machine key is essential for securing rotating components on shafts, ensuring reliable performance in various machinery applications. Its carbon steel construction provides strength and durability, making it suitable for high-stress environments. The undersize design allows for precise fitting, ensuring optimal performance and reducing wear. Ideal for maintenance professionals and engineers, this machine key is a vital component for effective machinery operation.