The DIN 603 standard specifies the requirements for a specific type of fastener known as a carriage bolt. Carriage bolts, also referred to as coach bolts, are designed with a smooth, dome-shaped head and a square or hexagonal shank beneath it. These bolts are commonly used in applications where a secure and flush connection is required, such as in wooden structures or machinery. The DIN 603 standard ensures that these carriage bolts meet specific dimensions, material requirements, and performance criteria to ensure their reliability and compatibility in various industries and applications.