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Serrated Safety Washer

(DIN 9025 / DIN 9250 / BN 791)

The Serrated Safety Washer, also known as a lock washer, features radial serrations on its surface. When tightened with a bolt or nut, the serrations embed into the material surface, providing extra friction to prevent loosening caused by vibration or load variations. Depending on application requirements, these washers are available in light, standard, and heavy-duty types, making them suitable for both precision components and heavy engineering structures.

Size & Material​

  • Sizes: Compliant with DIN 9025 / DIN 9250 standards

  • Types:

    • Light Type: DIN 9025 (VS)

    • Standard Type: DIN 9250 (SS)

    • Heavy Duty Type: DIN 9250 (VSS)

  • Materials:

    • Carbon Steel (surface treatment: Zinc Plated, Black Oxide)

    • Stainless Steel SUS304 (A2-70)

    • Stainless Steel SUS316 (A4-70)

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Features

  • Manufactured according to DIN 9025 / DIN 9250 / BN 791 international standards.

  • Serrated structure provides high friction and excellent anti-loosening performance.

  • Available in light, standard, and heavy-duty types for various applications.

  • Material options include carbon steel and stainless steel with zinc plating or black oxide for enhanced corrosion resistance.

  • Simple design, quick installation, and cost-effective solution for vibration resistance.

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Applications

  • Electronic devices and small motors (Light Type DIN 9025 VS)

  • General machinery and automation assembly (Standard Type DIN 9250 SS)

  • Automotive, heavy machinery, and bridge construction (Heavy Duty Type DIN 9250 VSS)

  • Semiconductor and medical equipment

  • Offshore and outdoor anti-loosening applications

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