Diall Coach Bolt & Nut - M10 - L130mm - Pack Of 5
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Product Information
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This guide is for DIY enthusiasts and tradespeople needing reliable fixings for timber applications. The Diall Coach Bolt & Nut pack offers a durable, carbon steel solution for secure joints, though its specific M10 diameter and 130mm length may limit its use in applications requiring different dimensions. This pack contains five zinc-plated M10 bolts and nuts, each 130mm long with partial threading, designed for robust connections, especially in woodworking.
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| Brand | Diall |
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Extended Product Information
FAQs
What is the primary recommended use for these coach bolts?
These coach bolts are primarily recommended for use on timber for various DIY and construction projects.
Can I use these bolts for joining metal parts?
While they may physically connect metal parts, their design and partial threading are optimized for timber. For metal-to-metal connections, specialized bolts are generally recommended.
How do I prevent the bolt from turning when tightening the nut?
The cup square head on the bolt is designed to lock into the material (like timber) when inserted into a suitably sized hole, preventing it from spinning as you tighten the nut.
What size drill bit should I use for the bolt?
For an M10 coach bolt, a drill bit typically between 11mm and 12mm is recommended for timber to allow the bolt shank to pass through snugly and the square section to seat properly.
Are these bolts suitable for outdoor use?
Yes, the zinc plating provides good resistance to corrosion, making them suitable for outdoor applications like garden furniture or fencing, though they are not fully rust-proof.
How much weight can these bolts support?
The load-bearing capacity depends on many factors, including the wood type, joint design, and number of fixings. They are designed for general DIY and medium-duty applications, not heavy structural loads.
What does 'partially threaded' mean for these bolts?
It means that only a portion of the bolt's length has screw threads, typically around 26mm in this case, with the remaining length being a smooth shank. This design is beneficial for joining materials of specific thicknesses.
Troubleshooting
Bolt spinning during tightening
Ensure the cup square head is fully seated into a pre-drilled square recess or that the hole is not too large. If the wood is soft, the recess may be deforming; try a slightly smaller pilot hole for the bolt shank.
Nut does not engage the thread fully
Check that the bolt length (130mm) is sufficient for the combined thickness of the materials being joined. Ensure the nut is not cross-threaded.
Corrosion or rust appearing
The zinc plating offers protection, but prolonged exposure to moisture can cause surface rust. Clean gently with a wire brush and consider applying a rust inhibitor or suitable paint if aesthetics are critical.
Bolt head or nut stripping
Use the correct size wrench or socket for the M10 nut. Avoid over-tightening, which can damage the tool or the fastener.
Pros and Cons
Pros
- Robust construction from carbon steel for durability.
- Zinc plating offers good corrosion resistance.
- Partially threaded design allows for varied material thicknesses.
- Cup square head prevents spinning during installation.
- Ideal for timber and general DIY applications.
Cons
- Fixed M10 diameter and 130mm length may not suit all projects.
- Partial threading might not be sufficient for very deep connections.
- Primarily designed for timber, compatibility with other materials may vary.
- Not suitable for heavy-duty structural applications requiring higher load ratings.
Setup, Compatibility & Care
Setup: To use the Diall Coach Bolt & Nut, drill a hole of the appropriate diameter for an M10 bolt (typically around 11mm to 12mm for timber). Insert the bolt from one side, ensuring the cup square head is seated firmly in its corresponding recess. On the other side, slide the nut onto the bolt's thread and tighten using a suitable wrench or socket for the M10 nut. The square section under the bolt head will prevent it from turning, allowing you to tighten the nut securely.
Compatibility: These fixings are primarily recommended for use on timber. While they can be used with other materials like plastic or even certain types of masonry (with appropriate anchors), their design and threading are optimized for wood.
Care: To maintain the longevity of the zinc plating and prevent corrosion, avoid exposing the bolts and nuts to harsh chemicals or prolonged immersion in water. If used outdoors, occasional inspection for rust is advised. Clean with a dry or slightly damp cloth if they become dusty. Store in a dry environment when not in use.