As a result, we deliver factory-direct pricing, consistent mechanical properties, and fast delivery. Similarly, this applies to all your formwork, balustrading, scaffolding, solar mounting, and general concrete fixing projects.
In addition, we produce these self-tapping concrete anchors to comply with ETA Option 1 and DIN 7504K. Meanwhile, they are approved for use in both cracked and non-cracked concrete C20/25–C50/60. Therefore, contractors and structural engineers rely on them for direct fixing without expansion plugs, with the unique advantage of being removable and reusable.
Technical Specifications of Hex Flange Concrete Screw Anchors
To begin with, we manufacture our concrete screw anchors in a range of diameters and lengths. Specifically, the table below summarizes the standard product range.
| Anchor Size | Drill Bit Size | Standard Lengths | Wrench Size (SW) | Flange Diameter | Typical Application |
|---|---|---|---|---|---|
| 7.5 (6) | 6 mm | 40 – 80 mm | 10 mm | 14 mm | Light-duty temporary fixing |
| 10.5 (8) | 8 mm | 60 – 130 mm | 13 mm | 18 mm | Formwork, balustrading, racking |
| 12.5 (10) | 10 mm | 80 – 160 mm | 15 mm | 22 mm | Scaffolding, handrails, steel fixing |
| 14.2 (12) | 12 mm | 100 – 200 mm | 19 mm | 32 mm | Heavy-duty structural anchorage |
| 16.5 (14) | 14 mm | 120 – 200 mm | 19 mm | 32 mm | Solar mounting, heavy structural anchorage |
Material & Coating Specifications for Concrete Screw Anchors
- To begin with, we use special hardened carbon steel as the base material for our concrete screw anchor bolts. The anchor achieves a tensile strength of 750 N/mm² and a yield strength of 600 N/mm².
- Moreover, we apply electro zinc plating (galvanised) as standard. This provides corrosion resistance class C1 for heated indoor environments. Zinc flake coating and Ruspert coating are available for more demanding environments.
- Additionally, we supply A2/A4 stainless steel versions for coastal and high-corrosion applications.
- Furthermore, the hex flange head provides a large bearing surface to disperse pressure, eliminating the need for a separate washer. The serrated flange face resists loosening under vibration.
- For special orders, we supply hot-dip galvanised (HDG) and Dacromet coatings for outdoor and offshore applications.
- Finally, we offer OEM & ODM — we customize diameter, length, head type, coating, and packaging according to your specifications.
ETA Option 1 Approval — Safety in Cracked & Non-Cracked Concrete
In fact, the European Technical Assessment (ETA) Option 1 is the highest safety classification for concrete anchors. Furthermore, it certifies that the anchor is approved for use in both cracked and non-cracked concrete, covering concrete strength classes C20/25 through C50/60.
To begin with, cracked concrete occurs in all reinforced concrete structures due to tension, shrinkage, and dynamic loading. Meanwhile, non-cracked concrete exists in compression zones. Then, an ETA Option 1 anchor must pass the most demanding test protocols for both conditions. Consequently, our anchors deliver reliable performance across the full range of concrete conditions.
Moreover, our concrete screw anchors are also assessed for seismic performance category C2. Therefore, they are suitable for use in earthquake-prone regions and high-vibration environments such as scaffolding, railings, and industrial equipment.
Key Advantages of ETA Option 1 Concrete Screw Anchors
- First, they are approved for both cracked and non-cracked concrete, providing maximum flexibility for structural applications.
- Second, they have seismic performance category C2 assessment for high-vibration and earthquake-prone regions.
- Third, they are removable and reusable, making them ideal for temporary installations such as formwork support and scaffolding.
- Finally, the non-expansion functioning ensures low risk of damage to base material, making them ideal for installation near edges and adjacent anchors.
How Hex Flange Concrete Screw Anchors Work — Self-Tapping Direct Fixing
In addition, the concrete screw anchor bolt offers a fast, direct fixing method without the need for expansion plugs or sleeves. Furthermore, it combines the speed of a screw with the strength of a traditional anchor.
To begin with, you drill a hole to the recommended diameter and clean it thoroughly. Meanwhile, the induction-hardened tip efficiently cuts threads in both soft and hard concrete. Then, you install using an impact driver or nut runner. Consequently, the anchor engages the concrete through thread cutting, creating a strong, mechanical interlock. After that, you drive the screw until the head reaches the fixture. Therefore, the installation is complete — no expansion, no waiting, and the screw can be removed and reinstalled for temporary applications.
Key Advantages of Self-Tapping Concrete Screw Anchors
- First, the one-step drill-and-drive procedure eliminates the need for expansion sleeves and reduces installation time.
- Second, the high-load capacity matches or exceeds traditional expansion anchors.
- Third, the non-expansion functioning ensures low risk of damage to base material, making them ideal for edges and adjacent anchors.
- Finally, the removable and reusable design enables sustainable, cost-efficient temporary installations.
About Our Factory — Direct Manufacturer of Concrete Screw Anchor Bolts
In fact, Tarco Industry operates a modern manufacturing facility. Specifically, we dedicate it to the production of concrete screw anchor bolts and structural fastening systems.
Furthermore, we complete every step in our own factory. This includes wire drawing, cold forging, thread rolling, induction hardening, and coating application. Consequently, we do not outsource production. We do not act as a middleman.
In addition, we equip our factory with advanced multi-station cold forging machines and automated heat treatment lines. As a result, we produce ETA-compliant concrete screw anchors with consistent thread geometry and reliable mechanical properties.
Therefore, whether you need standard concrete screws or custom configurations, Tarco Industry can produce them directly for you.
Factory Direct Advantages
- First, we are a Manufacturer, Not a Trader. You buy directly from Tarco Industry production lines, eliminating middleman markups.
- Second, we handle In-House Production. We produce anchors, threads, and coatings all under one roof for full quality control.
- Third, we welcome OEM & ODM. We customize diameters, lengths, head types, coatings, and packaging.
- Fourth, we maintain Bulk Production Capacity. We ensure stable output for large construction and infrastructure orders.
- Finally, we provide Factory Price. We offer competitive direct pricing for distributors, contractors, and OEMs.
Why Choose Our Hex Flange Concrete Screw Anchor Bolts?
- For example, our anchors offer ETA Option 1 Approval. Approved for use in both cracked and non-cracked concrete C20/25–C50/60.
- In addition, they provide High Load Capacity. Tensile strength of 750 N/mm² and yield strength of 600 N/mm².
- Moreover, they feature Hex Flange Head Design. The serrated flange face resists loosening under vibration and eliminates the need for a separate washer.
- Furthermore, they ensure Removable & Reusable Performance. Ideal for formwork, scaffolding, and other temporary installations.
- As a result of their Non-Expansion Functioning, they reduce the risk of damage to base material, making them ideal for edges and adjacent anchors.
- Finally, we provide Direct Factory Support. Tarco Industry provides technical guidance, samples, and custom production.
How to Install Hex Flange Concrete Screw Anchor Bolts
- First, drill the hole using a rotary hammer drill to the recommended diameter and depth. For example, a 10.5(8) anchor requires an 8 mm drill bit.
- Then, clean the hole thoroughly. Blow out dust at least 4 times with a hand pump or compressed air.
- Next, position the fixture. Place the fixture or bracket over the hole.
- After that, drive the anchor using an impact driver or nut runner. The induction-hardened tip cuts threads into the concrete.
- Finally, tighten to the recommended torque. Do not exceed the specified torque. For reuse, check thread wear before reinstallation.
Applications & Industries for Concrete Screw Anchor Bolts
- For instance, in formwork support systems, contractors use our anchors for temporary fixing of formwork brackets and supports.
- Also, in balustrading and handrails, they secure posts and rails to concrete floors and walls with high load capacity.
- In addition, for scaffolding and temporary anchorages, they provide reliable fixing that can be removed and reused.
- Furthermore, in solar mounting systems, they anchor solar panel brackets and mounting rails to concrete foundations and flat roofs.
- Lastly, in racking systems, public seating, fencing, and gates, they provide durable fixing for structural and architectural elements.
Quality Assurance & Certifications
Furthermore, Tarco Industry manufactures our concrete screw anchor bolts under strict quality control. Specifically, they comply with ETA Option 1, DIN 7504K, and ISO 1479 standards.
As a result, we perform dimensional inspection, tensile testing, hardness testing, and coating thickness verification. Moreover, we test every production batch before shipment.
- Additionally, we offer certifications including ISO 9001, CE, and SGS.
- Similarly, our production capacity reaches 5 million pcs per month.
- Also, we set the MOQ at 50,000 pcs (negotiable for sample orders).
- In terms of packaging, we offer bulk cartons on pallets with custom marking.
- Finally, we deliver within 15–20 business days after order confirmation.
Request a Quote for Hex Flange Concrete Screw Anchor Bolts
In conclusion, we are Tarco Industry. We are a direct manufacturer of hex flange galvanised concrete screw anchor bolts and ETA Option 1 approved self-tapping anchors.
Therefore, because we produce in our own factory, we offer competitive factory-direct pricing. In other words, you deal with no middleman and no trading company markup.
📩 Contact Tarco Industry now for a free sample or bulk quotation. Additionally, our engineering team can assist you in selecting the right anchor diameter, length, and coating for your specific concrete fixing application.
Tarco Industry — We Produce, We Manufacture, We Supply Directly.
