8.8 Grade Zinc Plated DIN 6921 Hex Flange Bolt

The 8.8 Grade Zinc Plated DIN 6921 Hex Flange Bolt is a high-strength threaded fastener featuring an integrated hexagonal head with a built-in flange (washer-like base). This design eliminates the need for a separate washer, providing even load distribution and increased bearing surface. The bolt is manufactured to DIN 6921 standards, ensuring dimensional accuracy and mechanical reliability.

Key Features:

Material: Medium carbon steel, quenched and tempered for durability.

Strength Grade: 8.8 (Tensile strength: 800 MPa, Yield strength: 640 MPa).

Coating: Zinc-plated (electroplated or mechanically applied) for corrosion resistance.

Flange Design: Integrated flange prevents loosening under vibration and distributes clamping force.

Thread Type: Metric coarse or fine thread (as per specification).

Standards Compliance: Conforms to DIN 6921, ISO 4162, and other international norms.

Applications:

Widely used in automotive, machinery, construction, and structural assemblies where vibration resistance and high clamping force are required.

Advantages:

Eliminates the need for a separate washer, reducing assembly time.

Zinc plating offers moderate corrosion protection (suitable for indoor/outdoor use).

High-strength Grade 8.8 ensures reliability in demanding applications.