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Concrete Screw Stair Bolt W-BS/A4 | A4 Stainless Steel | High Load Capacity | @Pack of 25 | by Wurth
Concrete Screw Stair Bolt W-BS/A4 is designed for high load capacity and efficient installation in outdoor concrete applications. Made from durable A4 stainless steel, it offers excellent corrosion resistance and flexibility with three anchoring depths. Ideal for both cracked and non-cracked concrete, this bolt ensures reliable performance and easy removability, making it perfect for professional installations.
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Technical Specifications
- Anchor size: 10 mm
- Anchor length: 140 mm
- Connection thread: M12
- Attachment heights: 60 mm, 40 mm, 30 mm
- Thread diameter: 12 mm
- Nominal drill-bit diameter: 10.0 mm
- Drill hole depths: 65 mm, 85 mm, 95 mm
- Embedding depths: 55 mm, 75 mm, 85 mm
- External drive: WS9
- Material: Stainless steel A4
- Through-hole diameter in component: 14.0 mm
- Head type: With connection thread (metric)
- Type description: W-BS A4 type ST
- Dimensions (H x L x W): 140mm x 140mm x 12mm
- Weight: 1.2 kg
Key Features
- Highest loads and efficient installation
- A4 stainless steel for corrosion resistance
- Extremely flexible with three anchoring depths
- Very high load capacity
- Smallest axial and edge clearance due to low expansion effect
- Very fast and simple assembly, immediately load-bearing and easy to dismantle
- Pre-positioned, push-through or stand-off installation possible
- Attachment can be adjusted up to two times after assembly
- Proof of performance with European Technical Assessment ETA-16/0043
- Fire resistance ratings R30, R60, R90, R120
- National technical approval Z-21.1-2075 as bonded screw anchor
Professional Installation Requirements
- Installation should be performed by qualified professionals familiar with concrete anchoring systems to ensure safety and compliance with technical approvals.
Applications
- Outdoor mounting attachments in concrete requiring removability
- Fixing points in cracked and non-cracked concrete
- Use in reinforced and non-reinforced concrete C20/25 to C50/60
- Suitable for concrete hollow body ceilings
Standards & Compliance
- Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
- Durable stainless steel construction reduces need for frequent replacements
- Efficient installation minimizes waste and resource use
Warranty Information
Warranty provided as per Wurth standard terms and conditions.
Available Now
The Wurth Concrete Screw Stair Bolt W-BS/A4 with connecting thread 25 PCS is available for immediate purchase, ideal for outdoor concrete mounting applications requiring high load capacity and removability.
