The G L Huyett Key 5/16 x 5/16 x 2-1/4 Form B is a carbon steel (CS) key designed for reliable performance in mechanical applications. Measuring 5/16 inch in both width and height, with a length of 2-1/4 inches, this key is engineered for a precise fit in keyways, ensuring optimal functionality of rotating components. The key is plated for enhanced corrosion resistance, making it suitable for various environments. Ideal for use in automotive, industrial, and machinery applications, this key provides a dependable solution for securing parts.