Enlarged Thickened Square Washer Zinc plating Blue Square washersquare flat washer with M8 M10 M12 M30 DIN436

1. Increasing Contact Area

• Function: Flat washers can increase the contact area between the nut or bolt and the component being connected. This helps distribute the pressure more evenly and prevents damage to the surface of the connected component due to excessive localized pressure.
• Example: When fastening thin metal sheets or plastic parts, a flat washer can prevent the sharp edges of the nut or bolt from directly contacting these materials, avoiding scratches or damage to the surface.

2. Preventing Loosening

• Function: Flat washers provide a smooth contact surface, reducing the risk of loosening caused by uneven surfaces during tightening.
• Principle: By filling in minor surface irregularities, flat washers ensure that nuts or bolts are evenly loaded, thereby enhancing the stability of the connection.

3. Corrosion Prevention

• Function: Flat washers can prevent direct contact between the nut, bolt, and the connected component, thereby reducing the possibility of electrochemical corrosion.
• Example: When connecting stainless steel bolts to carbon steel parts, using a flat washer can prevent galvanic corrosion between the two materials, extending the service life of the connection.

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Enlarged Thickened Square Washer Zinc plating Blue Square washersquare flat washer with M8 M10 M12 M30 DIN436 Images