Hexagonal Bolt High Tensile 8.8 - Silver
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The RangeUnifix Grade 8.8 Ht Hexagon Bolts Din 931 Bzp - M16 X 50 - Box Of 25 - Grey
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eBayUnifix Grade 8.8 HT Hexagon Bolts M16 x 50 - Box of 25
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DebenhamsUnifix Unisex Silver Grade 8.8 Ht Hexagon Bolts - Box Of 25 In
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B&QB&Q - M16 X 50 Hexagonal Bolt High Tensile 8.8 Din 931 Bright Zinc Plated (Bzp) 10 Pack
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Product Information
Full details
This guide is for DIY enthusiasts, builders, and mechanics who need reliable fasteners for general engineering and construction. The key benefit is the high tensile strength and corrosion resistance provided by the Grade 8.8 rating and BZP finish. A key caveat is that these bolts are not approved for safety-critical applications. These silver hexagonal bolts, also known as machine bolts, feature a hexagonal head ideal for tight spaces and are treated with a 5-micron zinc and clear pass to CR3+ standard for enhanced durability.
All features
| Colour | Silver |
|---|---|
| Model Part Number | 5014196242491 |
| Brand | Generic Fasteners |
Extended Product Information
FAQs
What does Grade 8.8 mean for these bolts?
Grade 8.8 indicates a high tensile strength for the steel alloy used in the bolt, signifying its ability to withstand significant pulling force before breaking. It's a common grade for structural and mechanical applications.
Are these bolts suitable for outdoor use?
Yes, the BZP (Bright Zinc Plated) finish provides good corrosion resistance, making them suitable for many outdoor applications. However, for highly corrosive environments or prolonged exposure, additional protective measures might be considered.
Can I use these bolts in safety-critical applications?
No, this product is explicitly not approved for use in safety-critical applications. For such uses, specialized, certified fasteners are required.
What tools are needed to install these hexagonal bolts?
Standard wrenches or sockets that fit the hexagonal head are required for installation and removal. The size will depend on the bolt's head dimensions.
How do I ensure the correct size bolt to order?
Check the product description for the bolt's diameter, length, and thread pitch. Measure the existing fastener or the components you intend to join to determine the required specifications.
What is the purpose of the silver finish?
The silver finish is the BZP (Bright Zinc Plated) coating, which enhances corrosion resistance and provides a clean, aesthetically pleasing appearance.
Troubleshooting
Bolt does not thread smoothly
Check that the bolt thread is clean and undamaged. Ensure the corresponding nut or tapped hole has the correct thread size and pitch and is free from debris.
Difficulty tightening the bolt
Ensure you are using the correct size wrench or socket for the hexagonal head. Verify that the bolt is aligned properly with the hole and not cross-threading.
Bolt head rounding or stripping during tightening
Use a high-quality, correctly sized wrench or socket. Apply steady, even pressure. Do not use excessive force, especially if resistance is met prematurely.
Visible rust or corrosion forming
While BZP offers protection, extreme conditions can cause degradation. Clean the bolt and apply a suitable lubricant or anti-corrosion compound if the application is exposed to harsh environments.
Pros and Cons
Pros
- Offers high tensile strength for secure fastenings.
- Good corrosion resistance due to BZP finish.
- Easy to install and remove with standard tools.
- Durable and reliable for various general applications.
- Manufactured to established DIN standards for quality.
Cons
- Not suitable for safety-critical applications.
- Requires appropriate tooling (e.g., wrench, socket) for installation.
- Requires inspection if used in demanding projects not specified as safety-critical.
- Limited availability in specific lengths or thread types may require further sourcing.
Setup, Compatibility & Care Instructions
Setup:
These bolts are designed for straightforward installation. Ensure you have the correct size wrench or socket to fit the hexagonal head. Thread the bolt into the corresponding pre-drilled or tapped hole. Tighten securely, but avoid overtightening, which could strip the threads or damage the material being fastened.
Compatibility:
These bolts are manufactured to DIN 931 standards, which dictates their dimensions and thread pitch. They are compatible with standard metric nuts and tapped holes of the same size and thread specification. Always ensure the bolt's grade and material are suitable for the application's load requirements and environmental conditions.
Care:
While the BZP finish provides corrosion resistance, it is not impervious to harsh chemicals or prolonged immersion in corrosive environments. For optimal longevity, clean the bolts periodically with a damp cloth to remove dirt and debris. Avoid abrasive cleaners. Store unused bolts in a dry environment to prevent premature tarnishing or corrosion.