The Machine Key M4 x 4 x 80 Form A C45K Z3 from G L Huyett is a high-quality component designed for secure torque transmission in mechanical assemblies. This undersized key measures 4 mm in width, 4 mm in height, and 80 mm in length, ensuring compatibility with standard keyways. Made from C45K steel, it offers excellent strength and durability, making it suitable for various applications in automotive and industrial machinery. This machine key meets industry standards, ensuring reliable performance in demanding environments.