Carpenters Mate Pro Hex Head Screws - Green - 6.3 x 190mm - Box 100

These screws are engineered for structural timber applications and perform well in common UK timber sizes. Their self-drilling capability generally handles various wood types, but exceptionally hard or dense woods might benefit from a small pilot hole.

The stamped head clearly indicates the screw's structural rating compliance. This allows for easy verification during inspections or when confirming that the correct, certified fasteners have been used for load-bearing applications.

The lifetime guarantee covers manufacturing defects in the screw itself. It does not cover damage due to improper installation, misuse, or environmental factors beyond the coating's intended protection.

Yes, the carbon steel construction with a unique case-hardened coating provides excellent durability and corrosion resistance, making them suitable for external applications.

These screws are certified structural replacements for M10 coach bolts. They offer similar or superior load-bearing performance, are easier and faster to install due to their self-drilling and hex head design, and come with enhanced durability features and guarantees.

In the event of a proven screw fault causing project failure, you would need to contact OSC with evidence of the fault and project details. They will then assess the claim for replacement of the project.

Ensure the drill is perpendicular to the timber surface and that the screw is started correctly into the wood. For difficult timber, a pilot hole might be necessary, though typically not required.

Ensure the correct hex drive tool is being used and that it is fully seated in the screw head. Reduce drill speed and apply consistent downward pressure.

Verify that the timber is not excessively dense or hardened. Ensure the self-drilling tip is clear of obstructions. For very hard woods, a small pilot hole may assist.

The case-hardened coating provides significant protection. If severe corrosion occurs, contact OSC regarding the lifetime guarantee, ensuring you have proof of purchase and installation context.