Hex socket countersunk screw according to ISO 10642 / DIN 7991 in steel grade 8.8 with zinc-plated (ZN) surface. The countersunk head sits flush with the surface, creating a low-profile assembly. The zinc coating provides basic corrosion protection in dry or indoor environments. Commonly used in machinery, equipment and assemblies where a flat installation is required. Available in multiple sizes and lengths from SWEBOLT & BOTNIA BOLT.