Description
The M12/30mm Flange Hexagon Head Screws (DIN 6921) are a type of fastener commonly used in construction and industrial applications. Let's break down the details:
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M12: This indicates the metric size of the screw. In this case, it's a 12mm diameter screw.
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30mm: This represents the length of the screw, measuring from the bottom of the head to the tip. In this instance, the length is 30mm.
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Flange Hexagon Head: These screws feature a flange (a wide, flat base) beneath the hexagon-shaped head. The flange provides a larger surface area, distributing the load and preventing the screw from sinking into the material.
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DIN 6921: This is a reference to the German Industrial Standard (Deutsches Institut für Normung) that specifies the characteristics of the flange hexagon head screws. DIN 6921 ensures the screws meet specific criteria for dimensions, material, and other properties.
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Zinc Plated Yellow Passivated: These screws have undergone a zinc plating process followed by yellow passivation. Zinc plating provides corrosion resistance, protecting the screws from rust and other environmental factors. Yellow passivation enhances the corrosion resistance and provides a distinctive yellowish appearance.
These screws are often used in applications where both the mechanical properties of a hexagon head and the stability of a flange are required. The zinc plating and yellow passivation make them suitable for use in environments where corrosion resistance is important.