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OnBuy.com£5.99Visit shop Fort Fasteners Pack Of 10 X M6 X 150Mm Zinc Cup Square Carriage Bolt Coach Screws With Hex Full Nuts 5057670111746
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B&Q£9.99Visit shop - Fort Fasteners Pack Of 10 X M6 X 150mm Zinc Cup Square Carriage Bolt Coach Screws With Hex Full Nuts
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The Fort Fasteners M6 x 150mm Cup Square Carriage Bolt set is designed for professional builders, woodworkers, and DIY enthusiasts who require a reliable, non-rotating fastening solution for heavy-duty timber applications. Its primary benefit is the cup square head design, which locks into the material to prevent turning during tightening, ensuring a secure grip. A notable caveat is that the 150mm length requires significant clearance behind the material, making it unsuitable for thin panels or restricted spaces.
| Colour | Grey |
|---|---|
| Brand | Fort Fasteners |
These are primarily designed for wood-to-wood or wood-to-metal connections. The square shoulder requires a slightly soft material like wood to lock into place.
You will need a drill with an M6 or slightly larger bit, a hammer or mallet for seating the head, and a wrench or socket set for the hex nuts.
The grey finish provides basic protection. For harsh or wet outdoor conditions, frequent inspections are recommended.
Washers are not included but are recommended to distribute pressure and protect the wood surface from being crushed by the nut.
The bolt has a standard M6 metric diameter.
Ensure the square shoulder under the head is fully seated into the timber by tapping it with a hammer or mallet.
If the bolt protrudes excessively, you may need to use additional spacers or cut the bolt to length using a hacksaw, ensuring threads are filed smooth.
To install, ensure your pilot hole is appropriately sized for an M6 bolt. Use a wrench or socket set to tighten the hex full nut until secure. These bolts are compatible with standard M6 washers if you wish to prevent marring the timber surface. While the grey finish offers standard protection, if using these in highly exposed or coastal environments, consider applying a anti-corrosion sealant or checking for signs of oxidation periodically. Store in a dry area to maintain thread integrity.
