This Machine Key, measuring 5/8 x 5/8 x 1 inches, is made from carbon steel and is classified as an undersize key. It is specifically designed for applications requiring precise fit and alignment in mechanical assemblies. The Form B design ensures compatibility with standard keyways, making it versatile for various machinery. The carbon steel construction provides strength and durability, suitable for high-load applications. This key is essential for maintaining the integrity of rotating components, ensuring efficient operation in industrial settings.