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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 concrete. Made from durable A4 stainless steel, it offers excellent corrosion resistance and flexibility with three anchoring depths. Ideal for outdoor mounting and structural fixing, this bolt ensures reliable performance in both cracked and non-cracked concrete applications.
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Technical Specifications
- Anchor size: 10 mm
- Anchor length: 160 mm
- Connection thread: M12
- Attachment heights: 80 mm, 60 mm, 50 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): 160mm x 160mm x 14mm
- Weight: 1.2 kg
Key Features
- Highest loads and efficient installation
- A4 stainless steel for corrosion resistance
- Extremely flexible use 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 adjustable 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 by qualified professionals recommended to ensure compliance with technical approvals and safety standards.
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 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 as per Wurth standard terms and conditions.
Available Now
Available for immediate purchase, ideal for outdoor concrete mounting and structural fixing applications.
