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Concrete Screw Stair Bolt W-BS/A4 | A4 Stainless Steel | High Load Capacity | @Pack of 50 | by Wurth
Concrete Screw Stair Bolt W-BS/A4 is designed for high-load applications, featuring durable A4 stainless steel for superior corrosion resistance. Ideal for outdoor mounting in both reinforced and non-reinforced concrete, this bolt offers flexible anchoring depths and quick installation, making it perfect for professionals seeking reliable and removable solutions.
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Technical Specifications
- Anchor size: 8 mm
- Anchor length: 105 mm
- Connection thread: M10
- Attachment heights: 40 mm, 30 mm, 20 mm
- Thread diameter: 10 mm
- Nominal drill-bit diameter: 8.0 mm
- Drill hole depths: 55 mm, 65 mm, 75 mm
- Embedding depths: 45 mm, 55 mm, 65 mm
- External drive: WS7
- Material: Stainless steel A4
- Through-hole diameter in component: 12.0 mm
- Head type: With connection thread (metric)
- Type description: W-BS A4 type ST
- Dimensions (H x L x W): 105mm x 105mm x 10mm
- Weight: 0.5 kg
Key Features
- Highest loads and efficient installation
- A4 stainless steel for corrosion resistance
- Extremely flexible use due to three anchoring depths
- Very high load capacity
- Smallest axial and edge clearance due to very 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 as bonded screw anchor for concrete anchoring
- Compatible with injectable mortar WIT-BS as bonded screw anchor
Professional Installation Requirements
- Professional installation by qualified personnel is recommended to ensure correct anchoring depth and load capacity compliance.
Applications
- Outdoor mounting attachments in concrete requiring removability
- Use in reinforced and non-reinforced, cracked and non-cracked concrete C20/25 to C50/60
- Suitable for fixing points in 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
- Long service life supports sustainable building practices
Warranty Information
Warranty details available upon request from Wurth; typically includes coverage against manufacturing defects.
Available Now
The Wurth Concrete Screw Stair Bolt W-BS/A4 with Connecting Thread 50 PCS is available now for immediate purchase. Ideal for outdoor concrete mounting applications requiring removable and high-load anchors.
