The Outdoor Accents decorative hardware product line features connectors and fasteners that bring strength and style to custom outdoor living structures. The Mission Collection adds a hint of southwestern flair. The APDMW56 decorative washer installs easily and can be used in a variety of wood-to-wood connections. 9/16 In. Hole Diameter. Width: 3 In. MAX galvanized with black powder-coat offers extra corrosion resistance for exterior and treated-wood applications. Made from 12-gauge steel.