DIN 7990 is a technical document that outlines the specifications for hexagon head bolts with large width across flats and construction of high-strength structural steel. This standard provides detailed information on the materials, dimensions, and mechanical properties of these bolts, ensuring their reliability and durability in various construction and engineering applications. By adhering to the guidelines set forth in DIN 7990, manufacturers and engineers can confidently select and use these bolts in their projects, knowing that they meet the necessary industry standards for quality and performance.