SAE Flat Washers with Zinc plating are precision-engineered hardware components standardized by the Society of Automotive Engineers (SAE). These washers are designed for use with bolts and screws of corresponding sizes, providing a smooth, flat bearing surface to distribute load evenly during fastening. SAE flat washers feature a smaller inside diameter (ID), outside diameter (OD), and thinner gauge, making them ideal for applications requiring tighter tolerances, compact spaces, or reduced material thickness