Heavy duty 6 x 6 hinges are strong and robust hinges designed to bear the weight and stress of heavy doors, gates, or other large structures. The “6 x 6″ designation typically indicates that the hinges are designed to be used with 6 x 6 lumber or metal posts. They are larger and thicker than standard hinges to provide the necessary support for heavy applications. Heavy duty 6 x 6 hinges are commonly used in construction projects, outdoor gates, and other applications where standard hinges would not be able to provide the required strength and stability. These hinges are built to withstand heavy loads while ensuring smooth operation and long-lasting performance. 6″ Heavy duty butt hinge has a tight 7/16″ pin and 2-11/16” leaf size.