Yellow Zinc Plated DIN6921 Serrated Hex Flange Bolt

These Class 8.8 screws are suitable for fastening most machinery and equipment. Serrations under the head grip the material surface for mild vibration resistance, and the flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. The zinc plating provides corrosion resistance in wet environments. Dimensions meet DIN 6921 specifications. Head height includes the flange. Length is measured from under the flange.