Need Woodruff keys for machinery, engines, or gear repairs? This pack of 25 SAE 152 half-moon keys is exactly what you want. Each key measures 3/8 inch wide by 1 inch long, with a height of 0.422 inches. They’re made from C-1035 steel, which is tough (72,000 PSI tensile strength) and has a Rockwell hardness of B90, so they’ll handle shear loads without deforming. Woodruff keys are super common in motors, pumps, pulleys, and automotive applications to secure gears, sprockets, and fans onto shafts. Having a pack of 25 means you’ll always have spares on hand for repairs or projects. They come plain (unplated), which is standard for most applications. If you’re a mechanic, machinist, or DIYer working on engines or industrial equipment, these are a must-have basic fastener.
