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Conical Spring Washer (DIN 6796)

The Conical Spring Washer, also known as a disc spring washer, features a conical shape that provides continuous elastic force after tightening. It prevents loosening caused by vibration, thermal expansion, or load variation. Compared to flat or spring lock washers, conical spring washers can withstand higher axial loads, making them ideal for applications requiring strong fastening reliability.​

Size & Material​

  • Sizes: Compliant with DIN 6796 standard

  • Materials:

    • Carbon Steel (surface option: Black Oxide)

    • Stainless Steel SUS304 (A2-70)

    • Stainless Steel SUS420

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Features

  • Manufactured according to DIN 6796 standard, designed to maintain bolt preload.

  • Conical structure delivers sustained spring pressure, enhancing fastening stability.

  • Handles higher axial loads than standard spring lock washers, suitable for high-load and high-vibration environments.

  • Carbon steel with surface treatments (manganese phosphate, zinc plating) improves wear and corrosion resistance.

  • Stainless steel SUS304 / SUS316 options for demanding or corrosion-resistant environments.

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Applications

  • High-strength bolt connections

  • Automotive, railway, and heavy machinery

  • Construction and bridge structures

  • Automation, power generation, and wind energy industries

  • Semiconductor, medical devices, and offshore engineering

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