DIN 985 refers to a specific standard established by the Deutsches Institut für Normung (DIN), which is the German Institute for Standardization. This standard pertains to the specifications and requirements for hexagon nuts with a prevailing torque, commonly known as self-locking nuts. The DIN 985 standard outlines the dimensions, material properties, and performance criteria necessary to ensure the reliability and effectiveness of these fasteners in various applications. It is crucial for manufacturers and engineers to adhere to this standard to guarantee that the nuts provide adequate locking mechanisms, thereby preventing loosening due to vibrations or other external forces. Compliance with DIN 985 not only enhances the safety and durability of assembled components but also facilitates interoperability among different manufacturers' products.