1. DIN 6915 is a standard specification issued by the Deutsches Institut für Normung (DIN) that provides guidelines for high-strength hexagon nuts for structural steel bolting. These nuts are designed to be used in conjunction with bolts and screws in construction and industrial applications where heavy loads and high levels of stress are expected. The standard outlines the dimensions, materials, and performance requirements for these nuts to ensure their compatibility and reliability in demanding settings. Compliance with DIN 6915 is essential to guarantee the safety and effectiveness of structural steel connections, making it a crucial reference for engineers, manufacturers, and contractors working in the field of construction and heavy machinery.