These countersunk finish washers are designed for use with flat or oval head screws, helping fasteners sit flush for a clean, professional appearance. The cup-style countersunk design increases the bearing surface to help protect wood, plastic, and thin materials from surface damage during installation. Made from 304 stainless steel, these finish washers offer excellent corrosion resistance for indoor, outdoor, and damp environments, making them suitable for furniture, cabinetry, fixtures, and general DIY projects.