The DIN 603 Carriage Bolts are a type of fastener that are commonly used in various applications. These bolts have a square neck under the round head, which prevents them from turning when tightened. They are designed to be used with a nut and are often used in woodworking and construction projects. The DIN 603 standard ensures that these bolts meet specific requirements for dimensions and materials, making them reliable and durable. With their unique design and high-quality construction, Carriage Bolts DIN 603 are a popular choice for many industries.