Carriage Bolts are designed with a round, dome head and a square neck below the head, which prevents the bolt from twisting when tightened through a pre-drilled hole. This feature allows for secure fastening without the need for a holding tool on the head side. Commonly paired with flat washers and nuts, carriage bolts are favored in woodworking, construction, and structural applications due to their high strength and tidy appearance. Available in a variety of lengths, diameters, and finishes, they are suitable for both indoor and outdoor use, including corrosive environments.