Metric DIN 912/ISO 4762 hexagon socket head cap screws are cylindrical head screws with an internal hexagonal drive suited for a hex / Allen key or wrench. DIN 912 is a German standard that specifies hexagon socket head cap screws with metric screw threads. These screws are commonly used in various industrial applications for fastening components together. DIN 912 specifies the dimensions, materials, and mechanical properties of these cap screws to ensure their compatibility and reliability in different engineering applications.