GFC Structa™6 Seismic Certified Concrete Screw Anchors

Full range – In stock – All supporting technical and C1/C2 seismic test data available here.

The team at GFC works hard to help keep your project moving.

What does this mean for you and your construction project?

  • Available in all diameters and all sizes 6mm / 8mm / 10mm / 12mm / 14mm
  • C1/C2 Seismic certified
  • Engineering design software to make specification easy
  • Materially sharper pricing compared to other available items
  • Available and in stock
  • Engineering support by GFC’s own Engineering Services Manager and National Specification Manager
  • Risk mitigation though free pull-out anchor testing and on site installation training
  • Highly-Corrosive resistance through GFC’s G10 coating (3,000 hours vs 1,000 hours salt spray test data)


It’s all in the detail.

In the world of construction and structural engineering, ensuring the safety and stability of structures is of paramount importance. One critical aspect of this process is the proper fastening of elements to concrete surfaces, a task that can be particularly challenging when considering the threat of seismic events and achieving C2 certification. To address this, GFC’s Structa™6 seismic certified concrete screw anchors offer a reliable solution for securing structural components. In this article, we will explore the importance of seismic certification, the characteristics of GFC’s concrete screw anchors, and how they contribute to safeguarding buildings during seismic activity.

Seismic certification represents a rigorous evaluation process that assesses the performance of GFC’s concrete screw anchors, epoxies and safety anchors. The primary objective of this C1/C2 certification is to ensure that these components can endure the forces generated by earthquakes, thereby safeguarding both lives and property. Here in New Zealand, strict adherence to seismic codes and regulations is paramount. Employing seismic certified construction materials and fasteners forms a critical part of meeting these stringent requirements.

GFC’s Structa™6 seismic certified concrete screw anchors represent a main stay product offer by GFC. GFC’s Structa™6 are designed to secure structural elements firmly to concrete or masonry surfaces. Renowned for their versatility, these anchors find applications across various industries, including construction, infrastructure development, and residential projects. What sets Structa™6 apart from traditional anchor bolts or expansion anchors is their streamlined installation process (Drill it, Drive it, Done). Instead, Structa™6 relies on a helical thread design that engages with the concrete, guaranteeing a secure and dependable connection.

Seismic Resistance: GFC Structa™6 seismic C1/C2 certified concrete screw anchors are meticulously engineered to withstand the lateral forces and vibrations associated with earthquakes. They undergo extensive testing under simulated seismic conditions to ascertain their reliability during such events.

Thread Design: These anchors feature a proprietary thread pattern meticulously designed to optimize their grip within concrete. This unique threading ensures a robust hold, effectively preventing loosening or failure during seismic disturbances.

Material Durability: The manufacturing of Structa™6 relies on high-quality carbon steel, often incorporating GFC’s own corrosion resistance coatings (we will be talking about this in later articles). GFC’s commitment to quality guarantees long-term durability, even in harsh environmental conditions.

Ease of Installation: One of the hallmark advantages of GFC’s Structa™6 concrete screw anchors is their simplicity of installation. The absence of complex equipment makes them accessible for a wide range of construction projects, saving time and reducing labour costs.

Versatility: GFC Structa™6 anchors are available in various lengths and diameters, ensuring compatibility with different load requirements. This versatility renders them suitable for a diverse array of applications, ranging from securing heavy machinery to anchoring structural steel components.

Safety Assurance: The primary benefit of utilising GFC Structa™6 seismic certified concrete screw anchors is the heightened level of safety they provide. They are purposefully engineered to withstand seismic forces, thus mitigating the risk of structural failure during an earthquake.

Efficiency: GFC Structa™6 concrete screw anchors streamline the installation process when compared to traditional anchors, 5 times faster there for reducing labour costs. This not only saves time but also significantly reduces labour costs.

Flexibility: Their versatility extends to seismic retrofitting projects, enabling the enhancement of the seismic resilience of existing structures.

Sustainability: The incorporation of high-quality materials and the long-term durability of GFC Structa™6 anchors contribute to sustainability efforts by reducing the need for frequent replacements and minimising environmental impact.

GFC Structa™6 seismic certified concrete screw anchors have ushered in a new era in the realm of structural fastening in earthquake-prone regions. Their combination of seismic resistance, ease of installation, and versatility makes them an indispensable component in ensuring the safety and resilience of buildings during seismic events. In construction projects situated in areas vulnerable to seismic activity, architects, structural engineers, and contractors are working to prioritise the use of seismic certified anchors, such as Structa™6 concrete screw anchors. This approach serves to mitigate potential risks and compliance to safeguard against construction system failure.

Click to view GFC’s full range of Structa™6 C1/C2 Seismic Certified Concrete Screw Anchors.

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PROJAHN specialise in tungsten-tip carbide drilling. Their ROCKET 5 SDS drill bits new and improved 5 cutter technology is setting new standards for drilling, in terms of speed and quality.

PROJAHN consistently produces high-quality and superior drilling products.

At GFC we believe that our partnership with PROJAHN is vital in ensuring that our customers have all round access to a range of high-quality drilling products that are PGM approved for setting GFC’s range of high-quality, ETA approved anchors.

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TECFI is a proud Italian owned and operated fixings and fasteners company that was first founded in 1997. TECFI are a leading manufacturer that specialise in the design, production of fixing systems.

Over the past 20+ years TECFI has been working hard to successfully undertake and achieve the European Technical Approval (ETA-CE) for their seismic C1 and C2 certified products.

At GFC we believe that our partnership with TECFI is vital in ensuring that our customers have all round access to a range of high-quality tested and certified concrete anchors.

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CELO are an innovative, global manufacturer in the construction industry that has dedicated their purpose to the design and production of high-quality fixing solutions. 

Founded in Spain in 1963, CELO was originally established as family business however in the most recent 20 years has expanded to now an international group of companies that continue to dedicate their work to the design, manufacturing and distribution of high-quality technical fixings. 

CELO maintains a very strong international presence across multiple continents with a wide range of logistic centers and manufacturing plants in Spain. Germany, China and the USA.

At GFC we believe that our partnership with CELO is vital in ensuring that our customers have all round access to a range of high-quality fixing systems.

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