Hex Bolt - Diall - M8

These loose zinc plated hex bolts are constructed from durable carbon steel. They are 50mm in leng...

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B&QB&Q - M8 Hex Carbon Steel (Grade 5.8) Bolt (L)50mm
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Product Information

Full details

This guide is for DIY enthusiasts and builders who need reliable fasteners for their projects. The Diall M8 Hex Bolt offers a durable and strong solution for various assembly tasks. A key consideration is that these are loose bolts, requiring separate purchase of nuts and washers.

All features

Model Part NumberM8
BrandDiall

Extended Product Information

FAQs

What material are these bolts made from?

These bolts are constructed from durable carbon steel.

What is the finish on these bolts?

They have a zinc-plated finish for corrosion resistance.

Are nuts and washers included with these bolts?

No, these are sold as loose bolts and require separate purchase of nuts and washers.

What size wrench or socket do I need for these bolts?

You will need an M8 socket or wrench for these bolts.

What is the length of these bolts?

The length of these bolts is 50mm.

Can these bolts be used for outdoor projects?

They can be used for protected outdoor applications due to the zinc plating, but for prolonged exposure to harsh weather, stainless steel alternatives may be more suitable.

What is the thread size of these bolts?

These bolts have an M8 thread size.

Troubleshooting

Bolt won't thread into nut

Ensure you are using an M8 nut and that both the bolt and nut threads are clean and free from debris. Check for any cross-threading.

Stripped bolt head

If the hex head is damaged, try using locking pliers to grip the head for removal or tightening. For future use, ensure the correct size socket or wrench is used and applied squarely.

Bolt corrodes quickly

The zinc plating may be compromised. Ensure bolts are stored in a dry place and avoid harsh environmental conditions. For external or wet applications, consider a stainless steel alternative.

Bolt feels weak under load

Confirm the bolt is rated for the intended load. For heavy-duty applications, consider larger diameter bolts or higher tensile strength materials.

Pros and Cons

Pros

  • Constructed from durable carbon steel for reliable strength.
  • Zinc plating offers good corrosion resistance for extended life.
  • Standard M8 size ensures compatibility with common M8 nuts and tools.
  • 50mm length is versatile for many applications.
  • Hex head allows for secure tightening with standard tools.

Cons

  • Sold as loose bolts, requiring separate purchase of nuts and washers.
  • Not suitable for applications requiring high-tensile strength stainless steel.
  • Zinc plating can wear off over time with excessive abrasion or harsh conditions.
  • Requires appropriate tools (wrench/socket) for installation.

Setup, Compatibility & Care

Setup:

These hex bolts require a pre-drilled hole or a nut for proper installation. Ensure the hole size is appropriate for an M8 bolt. Use a standard metric M8 nut and washer with the bolt to create a secure connection. Tighten using an M8 socket or wrench.

Compatibility:

  • Nuts: Compatible with standard M8 nuts.
  • Washers: Compatible with standard M8 washers (flat or spring).
  • Tools: Requires M8 wrenches or sockets for tightening.
  • Materials: Suitable for use with wood, plastic, and softer metals. For use with harder metals or masonry, appropriate pilot holes and anchors may be necessary.

Care:

To maintain the condition of the zinc plating and prevent corrosion:

  • Store bolts in a dry environment, away from moisture.
  • Wipe clean with a dry cloth if dust or debris accumulates.
  • Avoid prolonged exposure to harsh chemicals or saltwater environments, which can degrade the zinc coating.

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