The DIN 603 standard specifies the dimensions and technical requirements for carriage bolts with round heads and square necks. These bolts are commonly used in wood-to-wood and metal-to-wood fastening applications, providing a strong and secure connection. The round head design allows for a smooth, finished appearance, while the square neck prevents the bolt from rotating during installation, ensuring proper tightening. DIN 603 carriage bolts are known for their reliability and durability, making them a popular choice in construction, automotive, and manufacturing industries. With precise specifications for dimensions and material, these bolts offer consistent performance and strength for a wide range of fastening needs.