Pro-Bolt Dome Head Alloy Bolts - M4 x 0.50mm x 8mm x 12mm - Blue
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Product Information
Full details
The Pro-Bolt Dome Head Alloy Bolts are designed for enthusiasts looking to reduce weight and add a touch of color to non-safety critical areas of their vehicles. Offering a significant weight saving compared to steel and titanium, these bolts are ideal for bodywork, plastics, and cosmetic applications. A key caveat is their reduced strength compared to original bolts, requiring careful torque application to prevent damage.
All features
| Colour | Blue |
|---|---|
| Model Part Number | AWFFB412-5B |
| Brand | Pro-Bolt |
Extended Product Information
FAQs
What material are these bolts made from?
The bolts are made from 7075T73 alloy, known for its high strength-to-weight ratio.
How much lighter are these bolts compared to steel?
They are approximately 60% lighter than stainless steel bolts.
Can I use these bolts on critical components like suspension or brakes?
No, these bolts are explicitly not suitable for any safety-critical applications. They are intended for non-load-bearing, cosmetic, or ancillary parts.
What is the anodising process for?
The anodising process provides a chemically bonded colour finish that is resistant to corrosion and improves the aesthetic appeal of the bolts.
How do I determine the correct torque setting?
Refer to the torque table provided in the guide, which specifies the maximum torque in Newton-meters (NM) and foot-pounds (ft/lbs) based on the bolt's thread diameter (M4, M5, M6, M8).
Are these bolts sold individually?
No, the Pro-Bolt Dome Head Alloy Bolts are sold in packs of 5.
Can the colour be painted over?
The anodised finish is a durable surface treatment and is not designed to be painted over. Attempting to paint may lead to poor adhesion.
Troubleshooting
Bolt head stripping during tightening.
You have likely exceeded the recommended torque setting. Use a torque wrench and refer to the torque guide for the correct value for the bolt's thread diameter. Ensure you are using the correct size driver bit.
Anodised finish appears to be fading.
Prolonged exposure to direct sunlight and harsh weather can cause fading. Clean gently with mild soap and water. Consider applying a protective wax if the item is frequently exposed.
Bolt feels loose after installation.
Double-check the thread pitch and diameter to ensure compatibility with the threaded hole. Verify that the correct torque setting was applied. If the hole is damaged, it may require re-tapping or a larger fastener.
Corrosion noticed on the bolt surface.
While resistant to mild conditions, prolonged exposure to harsh chemicals or saltwater without cleaning can eventually affect the finish. Clean the bolt thoroughly with mild soap and water. Ensure the anodising process was within specification.
Pros and Cons
Pros
- Significantly reduces weight compared to standard fasteners.
- Offers a high-quality, durable, and attractive anodised finish.
- Provides good resistance to common environmental corrosives.
- Enhances the visual appeal of non-critical components.
- Cost-effective alternative for cosmetic upgrades.
Cons
- Not suitable for safety-critical or high-stress applications.
- Requires lower torque settings than original bolts to avoid stripping or damage.
- Softer material can be more prone to scratching if not handled carefully.
- May not be compatible with all original hardware specifications.
- Anodised finish can fade over extended periods in harsh UV conditions.
Setup, Compatibility & Care
Setup: These bolts are designed as direct replacements for original M4, M5, M6, and M8 bolts. Ensure you have the correct thread diameter and length for your application. Always use a torque wrench set to the manufacturer's recommended values (see table below) when installing to prevent damage.
Compatibility: Primarily suitable for non-safety critical areas. Examples include:
- Bodywork and plastics
- Fairings and screens
- Fuel caps
- Number plate brackets
- Exhaust cans
- Engine casing covers
*Not suitable for*:
- Chassis components
- Suspension parts
- Brake system fasteners
- Any load-bearing or safety-critical applications.
Care: Clean with a mild soap and water solution using a soft cloth. Avoid abrasive cleaners or solvents, which can damage the anodised finish. For maintenance, periodically check torque settings, especially after the initial installation.
| Thread Diameter | Max Torque (NM) | Max Torque (ft/lbs) |
| --------------- | --------------- | ------------------- |
| M4 | 1.20 | 0.88 |
| M5 | 2.50 | 1.84 |
| M6 | 5.00 | 3.69 |
| M8 | 10.00 | 7.38 |