Diall Hex Steel Concrete Screw - (Dia)10mm - (L)85mm - Pack Of 10

The non-expansion design means the screw does not exert outward pressure on the masonry as it's tightened. This prevents cracking and makes it ideal for installations near edges or other fixings.

These screws are designed for solid masonry. For hollow materials, alternative fixings like appropriate wall plugs or anchors would be recommended to ensure a secure hold.

The exact pilot hole size depends on the specific masonry material. It's recommended to consult the product packaging or a reliable fixings guide for the precise diameter required for a 10mm screw in your type of masonry.

Use a hex socket or wrench of the appropriate size to turn the screw counter-clockwise until it is fully disengaged from the masonry.

While made of steel, long-term outdoor exposure without protection may lead to corrosion. For environments with high moisture or salt, consider corrosion-resistant coatings or specific outdoor-rated fixings.

No, these screws feature a hex head and require a hex socket or wrench for driving. A standard screwdriver will not be compatible.

The pilot hole may be too large or not deep enough. Ensure the correct drill bit size was used for the masonry and that the hole is adequately deep for the screw length.

Check that you are using the correct size hex socket or wrench. Ensure the pilot hole is clear of debris and that the screw is aligned correctly.

The pilot hole may be too close to an edge or an existing fixing. Ensure adequate spacing is maintained between fixings. Verify that the correct drill bit size was used, as a hole that is too large can exacerbate stress.

Use a high-quality hex socket that fits snugly. Apply steady, even pressure and ensure the tool is properly seated before turning. Avoid using excessive force.