Replacement generic split washer commonly used for pellet grill parts and more. This washer is designed to fit 1/4" screw, measures 0.260" ID & 0.487" OD. As a screw is tightened, this washer flattens to add tension to the joint and prevent loosening from small amounts of vibration. This washer has a black-oxide steel finish, making it mildly corrosion resistant in dry environments. The material is 18-8 stainless steel which has a good chemical resistance and may be mildly magnetic. Sold individually.