The Machine Key M8 x 7 x 40 Form B is an undersized stainless steel key designed for securing rotating components in machinery. Measuring 8mm in width, 7mm in height, and 40mm in length, this key is ideal for applications requiring precise alignment and torque transmission. Made from high-grade stainless steel, it offers excellent resistance to wear and corrosion, ensuring a long service life. This key is compliant with industry standards, making it suitable for use in various mechanical assemblies, including motors, gearboxes, and pulleys. Its reliable performance makes it essential for engineers and maintenance professionals.