DIN 6921 is a German standard for hexagon flange bolts.
It has an integrated washer (flange) under the head.
These bolts are usually fully threaded.
The grade mentioned is 8.8 high tensile steel.
Grade 8.8 provides strong clamping force and durability.
The flange distributes load and reduces loosening.
It eliminates the need for a separate washer.
Commonly used in automotive and machinery applications.
Available in various metric sizes and lengths.
Suitable for secure and vibration-resistant fastening.