In many construction and assembly applications, it is necessary to create a strong and secure connection to the concrete, often directly through the element being fastened. This may be a steel bracket, column, frame, machinery or other heavy element.
It is in these situations that throughbolt anchors are best used, as they allow quick and easy installation and ensure a solid connection.
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What is a throughbolt anchor and where is it used?
A throughbolt anchor is a steel connecting element designed for reliable fastening of heavy loads in solid materials such as concrete and stone. It works on a simple principle, where after inserting it into a hole and tightening the nut, its expansion part expands, which then wedges into the concrete and creates a strong connection. Is it possible? perform the assembly directly over the part to be fastened, i.e. through a "through-beam", which saves time and simplifies the entire procedure.
This type of anchoring is most often used in the installation of steel structures, railings, columns, beam flanges, brackets or brackets. Due to their design, troughbolt anchors are ideal where high load-bearing capacity is required. Beam anchors are suitable for use in intact concrete, and it is possible to choose from various diameters and lengths depending on the specific application.
Advantages of throughbolt anchors
The main advantage of throughbolt anchors is quick installation without the need for pre-assembly and high reliability of the connection. Compared to other types of mechanical anchors (e.g. hammer-in anchors), they offer higher load capacity and versatility of use. In combination with high-quality concrete and proper tightening, they provide assurance that the attached element will remain securely in place even under high loads.
For safe anchoring of demanding applications, it is a matter of course to choose throughbolt anchors with ETA (European Technical Approval) certification, which you can find in our offer under the WT WINTECH brand and the sales name WA Throughbolt Anchor. Certified anchors not only provide a guarantee of reliability and safety, but also have the necessary technical parameters for installation, such as the recommended tightening torque for individual anchor dimensions, which you can rely on without any worries. Complete technical parameters can be found in the clear product sheet.
We choose from our certified products
Correct selection and installation are the key to safety
When choosing a throughbolt anchor, it is important to consider not only its diameter and length, but also the quality of the concrete it will be fixed into. It is recommended that the hole be drilled exactly to the diameter of the anchor and then thoroughly cleaned of any dust residue that could significantly reduce the load-bearing capacity of the connection.
For proper functionality, it is essential to adhere to the prescribed tightening torque using a torque wrench. While overtightening risks damaging the concrete structure, undertightening prevents the expansion forces from fully developing, which can compromise the overall load-bearing capacity of the joint.
Although the installation process is very easy, its reliability depends on following the correct methodology. Only with correct installation can the resulting anchoring achieve high load-bearing capacity and long service life.
A) Drill a sufficiently deep hole according to the installation parameters (see product sheet). Select the drill diameter exactly to the diameter of the anchor.
B) Clean the hole of any remaining material by vacuuming, blowing or brushing.
C) Install the through-beam anchor
and the part to be attached by gently tapping it with a hammer.
D) Tighten the anchor with the nut to the appropriate torque according to the installation parameters (see product sheet).
In conclusion
Throughbolt anchors are a professional solution for anyone who needs a strong, permanent and safe anchoring in concrete. Thanks to their easy installation and high load-bearing capacity, they are the ideal choice for installation companies, builders and DIYers who value reliability and quality.
Take a look at our current range of troughbolt anchors and choose exactly the ones that suit your project.
Frequently Asked Questions (FAQ)
What material can I use a throughbolt anchor in?
Throughbolt anchors are mainly suitable for concrete. They can also be used in stone. They are not recommended for masonry, aerated concrete or plasterboard. For these materials, alternative anchoring methods using frame anchors or chemical anchors must be used.
How to choose the right size of throughbolt anchor?
The size of the anchor is determined by the thickness of the element being fastened and the required load capacity. Generally, the larger the diameter and depth of the anchor, the higher the load capacity. For the correct choice of anchor size, please refer to the installation parameters in our product sheet.
What drill bit should I use to drill the hole?
Use a drill bit with the same diameter as the anchor. For example, for an M10 through-bolt anchor, use a 10 mm drill bit. Check the installation parameters in our product sheet for the procedure.
What is the difference between a throughbolt anchor and a hammer-in anchor?
A throughbolt anchor is tightened with a nut, while a hammer-in anchor is activated by striking. A throughbolt anchor usually has a higher load-bearing capacity and is more suitable for permanent connections.
What to do if the through-beam anchor does not "hold" in the concrete?
Check:
- correct drill diameter,
- hole depth,
- cleaning the hole (dust significantly reduces adhesion),
- quality of the concrete (it must not be weathered or cracked).
Can the throughbolt anchor be reused?
No, the throughbolt anchor is not intended to be reused. After tightening, the expansion part is permanently deformed. Once it is wedged into the concrete structure, it loses its ability to retighten properly and securely secure a new joint.