6mm Plated Flat Washers Pk/10. These flat washers spread clamping load and protect the joint surface under a compatible bolt or nut. They are not crush washers or fluid-sealing washers. Use them only where inside diameter, outside diameter, thickness, material, and load requirements match the fastened joint. Fitment / Compatibility Universal / Custom: Confirm washer inside diameter, outside diameter, thickness, material, fastener size, and mounting location. Product Details Use area: General-purpose flat fastening washer. Before Ordering Confirm the washer bears fully on the joint surface and suits the fastener grade and required clamp load. Do not substitute a standard plated flat washer for a specified copper, aluminum, bonded, or other sealing washer.