Fender Washer M12x45 A2 SS 304 9021B

A fender washer is a type of flat washer with a small inner diameter and a proportionally large outer diameter, specifically designed to distribute fastening loads across a wider surface area. Originally created to attach fenders to automobile bodies, these thin-gauge washers are ideal for securing, repairing, or reinforcing thin, soft, or brittle materials and covering oversized or damaged holes.