SS8 Spring Lock Washers - M20 - 20mm - Silver

The spring design of these washers exerts a continuous radial force to create friction and prevent...

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OnBuy.comSpring Washers Din 127B Zinc Plated Spring Steel Split Lock Washers Helical Anti Vibration M6 To M20 5056523233451
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Product Information

Full details

The SS8 Spring Lock Washers (M20) are designed for engineers, mechanics, and DIY enthusiasts who require a reliable locking mechanism to prevent fasteners from vibrating loose. By exerting a continuous radial force, these washers ensure the integrity of bolted connections in high-vibration environments. While they offer excellent stability and load distribution, it is important to note that they are intended for specific M20 bolt sizes and should be matched correctly to avoid compromising the fastening assembly.

All features

ColourSilver
BrandSS8

Extended Product Information

FAQs

Can I use these washers on M18 or M22 bolts?

No, these washers are designed specifically for M20 (20mm) bolts to ensure the correct fit and load distribution.

Are these suitable for saltwater environments?

Yes, the zinc-plated steel provides good corrosion resistance, making them suitable for marine and outdoor applications.

How do I know if the washer is working correctly?

The washer should sit flush under the bolt head or nut when the fastener is properly torqued, exerting tension against the assembly.

Can I reuse these spring washers?

While they can often be reused if they haven't suffered permanent deformation, it is best practice to use new washers during critical re-assemblies.

Do these washers replace the need for thread-locking fluid?

They provide a mechanical locking mechanism to prevent loosening from vibration, but for extreme applications, some users may choose to use them in combination with thread-locking compounds.

Troubleshooting

Fastener feels loose despite the washer

Verify that the bolt has been tightened to the correct torque specification; the washer needs to be compressed to exert force.

Washer appears deformed or flattened

If the washer has been flattened beyond its elastic limit due to extreme over-tightening, it should be replaced to restore proper tension.

Pros and Cons

Pros

  • Significantly reduces fastener loosening due to vibration
  • Improved load distribution via square cross-section
  • High corrosion resistance for outdoor or marine use
  • Essential for high-movement machinery maintenance

Cons

  • Specific to M20 sized fasteners
  • Not suitable for use with very soft materials that may deform under high tension
  • Requires proper bolt torque to ensure the spring force is correctly engaged

Setup, Compatibility & Care

For optimal results, ensure the washer is placed on the bolt shank before threading the nut or inserting the bolt into the tapped hole. These washers are specifically sized for M20 hardware; ensure the inner diameter of the washer fits snugly against the M20 bolt. To maintain the life of the connection, check for signs of rust after long periods of outdoor exposure, although the zinc plating is designed to mitigate this. Avoid reusing spring washers if they have been flattened to the point of permanent deformation, as their ability to provide spring force will be significantly reduced.

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