Cut this square or rectangular key stock to length to create a straight machine key. Straight keys are the most common type of key. Machine keys are often the same material and as hard or harder than the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.

Aluminum key stock is one-third the weight of steel key stock, but not as strong. It resists corrosion and is nonmagnetic.

For technical drawings and 3-D models, click on a part number.