Common Sense back plate 91-BS-78507-2A is a nickel-plated brass hardware designed for heavy-duty outdoor use, available in a 1000 pack. This corrosion-resistant back plate is compatible with turn button hardware and washers, making it ideal for marine, upholstery, canvas, awning, and outdoor fabric applications. Its sturdy brass construction with a nickel finish provides reliable fastener support in demanding environments while enhancing the durability of patio and outdoor living projects. This back plate integrates smoothly with fastener hardware systems, offering a secure and long-lasting fastening solution.