National Catalog 1184BC. Heavy duty mending plate in black finish. Used for attaching, connecting, aligning, and splicing materials. Slots for 5/16 In. carriage bolt, chamfered corners provide decorative look. Black powder coat finish for improved weather resistance. Warning: The safe working load for this product depends upon the application and fasteners used. In order to reduce the risk of personal injury or property damage, consult with design professionals to determine if this product is appropriate for your application.