Pro-Bolt Countersunk Alloy Washer - Pack Of 5 - Blue
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Product Information
Full details
The Pro-Bolt Countersunk Alloy Washer is designed for automotive and motorcycle enthusiasts looking to save weight while adding a refined finish to their builds. Ideal for non-safety critical applications, these washers provide excellent load distribution and corrosion resistance in a lightweight package; however, they are not intended for use in high-stress or critical structural areas.
All features
| Colour | Blue |
|---|---|
| Model Part Number | AWFWAC8-5B |
| Brand | Pro-Bolt |
Extended Product Information
FAQs
Are these safe for engine mounts?
No. These washers are for non-safety critical areas only and should not be used in high-stress applications like engine or suspension mounts.
Can I use these with any bolt?
They must be used with countersunk head bolts. They are designed to fit the taper of the bolt head.
Will they rust in the rain?
The material is highly resistant to saltwater and road film, so they will not rust in standard outdoor conditions.
What is the anodisation thickness?
The alloy is anodised to a thickness between 8 and 12 microns.
How many washers come in a pack?
Each pack contains 5 washers.
Troubleshooting
Washer does not sit flush with the bolt head.
Verify that your bolt is a true countersunk type. A standard flat or flange head bolt will not seat correctly in this washer.
Finish appears dull or scratched.
Check if abrasive cleaners were used. The anodised layer is durable but can be damaged by coarse friction. Use only non-abrasive cleaning agents.
Pros and Cons
Pros
- Significant weight reduction compared to steel or titanium
- High resistance to road debris and common environmental corrosives
- Stylish anodised finish enhances vehicle aesthetics
- Excellent for load spreading with countersunk hardware
Cons
- Not suitable for safety-critical or high-stress applications
- Requires matching hardware dimensions for proper flush fit
- Limited to non-structural mounting tasks
Setup, Compatibility & Care
To install, verify that your countersunk bolt size matches the intended washer diameter. Place the washer onto the bolt shank before inserting it into the panel hole. Tighten by hand or with a low-torque wrench to prevent damaging the anodised coating or stripping the threads.
For maintenance, clean with a soft cloth and mild soap to preserve the bright anodised finish. Avoid harsh abrasive cleaners or heavy-duty steel wire brushes, as these will scratch the 8-12 micron anodised layer and expose the raw alloy to corrosion.