The Machine Key 5/16x5/16x1-1/2 Form B by G L Huyett is a durable stainless steel component designed for effective torque transmission in machinery. With dimensions of 5/16 inch in width and thickness, and a length of 1-1/2 inches, this undersized key is perfect for applications requiring precise fitment. The SS 300 material ensures excellent corrosion resistance, making it suitable for various industrial environments. This key adheres to relevant standards, ensuring compatibility and reliability in mechanical assemblies.