Pretec’s Guide to Concrete Screws
What Is a Concrete Screw?
A concrete screw is used for all types of concrete fastening. It’s typically applied in medium-load installations in concrete, solid brick, hollow brick, or stone surfaces. Concrete screws can also be used in compression-resistant natural stone and green concrete.
Concrete screws are designed to provide a strong and secure grip while allowing for quick and efficient installation—even in tough materials. They can be fastened close to the edge of the concrete without risk of cracking or damage. Despite having a small hole diameter, concrete screws offer very high pull-out values and are suitable for both standard and reduced embedment depths.
Concrete screw, concrete anchor, concrete bolt, screw anchor—dear child has many names, as the saying goes.
How Is a Concrete Screw Used?
Concrete screws are used for quick, permanent, or temporary fastening and are installed directly into a pre-drilled hole without the need for a plug. They provide an expansion-free heavy-duty fixing by cutting their own thread into the concrete, which makes it possible to install them close to edges or adjacent anchors without damaging the concrete.
Installation with an impact driver means there’s no need for a torque wrench—it’s fast, reliable, and reduces the risk of installation errors.
When installing a concrete screw, it’s important to follow the installation instructions according to the ETA approval and to properly clean the holes to ensure a safe application. After installation, the screw can also be adjusted if needed, as long as it’s done according to the ETA installation guidelines.
In the case of possible reuse, a gauge (Go/No-Go gauge) should be used to ensure the correct hole dimensions. The concrete screw can be loaded immediately—no curing time is required, as is the case with chemical anchors. It is also fully removable.
See Pretec’s stock range of concrete screws here: Concrete Screws.
Concrete screws are available with different head types for a wide variety of applications. Please don’t hesitate to contact us if you can’t find exactly what you’re looking for.
How to Choose the Right Concrete Screw
Concrete is generally classified as either “cracked” or “non-cracked.” Concrete zones such as walls, columns, and floors are considered non-cracked concrete, while areas subject to tensile stress—like the undersides of beams, balcony floors, and ceilings—are considered cracked concrete.
Concrete screws approved for use in both cracked and non-cracked concrete are referred to as Option 1, while those approved only for non-cracked concrete are referred to as Option 7.
Concrete screws are used in a wide range of applications, including fastening impact barriers in concrete or asphalt, railings, fall protection systems, pallet racks, wall supports, installations in concrete with small edge distances, and fastening welded plates to concrete ceilings.
Concrete screws are available with different head types for various applications—feel free to contact us if you’d like more information.
Concrete Fastening – What We Offer
- High-load, high-performance concrete fastening solutions, available in both mechanical and chemical options
- A wide range of products covered by ETA – European Technical Assessment
- Seismic-approved options
- Fire-rated options
- Technical support available by phone and email
