The Machine Key 1 x 1 x 5-1/2 Form B Carbon Steel Undersize from G L Huyett is designed for secure shaft-to-hub connections. This key measures 1 inch in width, 1 inch in height, and 5-1/2 inches in length, crafted from high-quality carbon steel for enhanced strength and wear resistance. Its undersized design allows for precise fitting in keyways, ensuring optimal performance in various mechanical applications. This machine key is ideal for use in motors, gearboxes, and other machinery where reliable torque transmission is essential. It complies with industry standards, making it a dependable choice for both industrial and commercial use.