Descriptions
Flat washers are a common type of mechanical component that serve several important functions in various machinery and structures. Here are the main roles of flat washers:
1. Increasing Contact Area
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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.
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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
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Function: Flat washers provide a smooth contact surface, reducing the risk of loosening caused by uneven surfaces during tightening.
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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
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Function: Flat washers can prevent direct contact between the nut, bolt, and the connected component, thereby reducing the possibility of electrochemical corrosion.
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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.
Capabilities | Fastener customized,Bolt, screw, washer, hardware tools |
Material | Aluminum , steel, metal, plastic |
Lead Time | 1-2 weeks for sample,5 weeks for bulk order |
Payment Terms | Trade Assurance,T/T,L/C,Paypal,Western Union |
variety of material options

Multiple surface finishes available
Customize as drawing
Quote within 24 hours
1&1 sales engineer consulting
Perfect after-sales service