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Concrete Screw Stair Bolt W-BS A4 A4 Stainless Steel High Load Capacity Variant-1 Wurth
Concrete Screw Stair Bolt W-BS A4 is designed for high load capacity and efficient installation in outdoor concrete applications.
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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.
