Cup washer

A small, lightweight washer with a concave shape, serving as an insulative, decorative, and supportive accessory for bolts and screws. The washer features a bowl-like central depression that allows for a snag-free grip when tightening a bolt or screw head, enhancing both functionality and aesthetics. This product is particularly useful for individuals in construction, manufacturing, and DIY projects who require secure and visually appealing fastening solutions.