This Key measures 5/16" x 5/16" x 3" and is classified as Form B, made from carbon steel with a plain finish. Designed for use in various mechanical applications, this key provides a secure fit in keyways, ensuring effective torque transmission between shafts and hubs. Its robust construction allows it to handle significant loads, making it suitable for machinery, automotive, and industrial applications. The dimensions are optimized for compatibility with standard keyway sizes, ensuring ease of installation and maintenance.