DIN 7990 is a German standard that outlines the requirements and guidelines for the execution of fasteners, specifically for bolts and screws with ISO metric coarse pitch threads. Published by the German Institute for Standardization, this standard ensures the quality and reliability of fasteners used in various industries, including construction, automotive, and engineering. By providing detailed specifications for thread dimensions, material properties, and surface finishes, DIN 7990 enables manufacturers to produce high-quality fasteners that meet the demands of modern applications. Moreover, the standard promotes interchangeability, allowing users to confidently select and use fasteners from different manufacturers, thereby streamlining production processes and reducing errors.