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Undercut Anchor Bolt

Precision-engineered back-fixing solution for stress-free heavy cladding installation.

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Undercut Anchor Bolt Featured Image
  • A2/A4 Stainless Steel

    Material Grade

  • 7mm - 13mm

    Drill Hole Diameter

  • Anchoring Depth

    6mm - 25mm

  • Up to 5.0 kN (Tensile)

    Load Capacity

  • 2-3 Weeks

    Lead Time

Introduction

Advanced Mechanical Fixing for Ventilated Facades

The Undercut Anchor Bolt is a specialized mechanical fastener designed for the 'back-fix' method of cladding. By creating a stress-free connection within a pre-drilled undercut hole, it allows for the secure mounting of natural stone, ceramic tiles, and high-pressure laminates without visible surface hardware.

Benefits

Why Choose Undercut Anchor Bolts

  • Stress-Free Expansion-Free Anchoring

    The undercut geometry ensures the load is distributed evenly through a mechanical interlock rather than expansion pressure, preventing panel cracking.

  • Superior Aesthetic Finish

    Hidden rear-side installation allows for a clean, seamless facade appearance without visible clips or through-bolts.

  • High Load-Bearing Performance

    Optimized for heavy stone and large-format panels, providing exceptional resistance to wind suction and seismic vibrations.

  • Corrosion Resistant Durability

    Manufactured from high-grade stainless steel to ensure long-term structural integrity in harsh coastal or industrial environments.

Standard

Technical Specifications & Customization

Our undercut anchors are available in multiple lengths and diameters to accommodate varying panel thicknesses from 8mm to over 30mm. Each bolt is compatible with standard aluminum sub-frame brackets and hanging systems.

Standard finishes include passivated stainless steel for maximum oxidation resistance. Custom sizing and material grades (such as 316L) are available upon request to meet specific project engineering requirements.

Applications

Related Applications

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FAQS

Frequently Asked Questions

Common technical inquiries regarding the selection and installation of undercut anchoring systems for facade engineering.

What materials are compatible with undercut anchors?
They are ideal for natural stone (granite, marble), porcelain stoneware, ceramic plates, and high-pressure laminates (HPL) — for example in granite facade cladding systems.
Does the anchor require specialized drilling equipment?
Yes, a dedicated undercut drilling machine is required to create the conical hole profile necessary for the mechanical lock.
How does this compare to traditional edge-pin fixing?
Undercut anchors offer higher load values and allow for larger panel sizes because the fixing point is moved away from the fragile panel edges.
What is the minimum panel thickness required?
Generally, a minimum thickness of 8mm to 10mm is required, depending on the material density and required anchoring depth.
Are these anchors suitable for seismic zones?
Yes, the stress-free mechanical interlock provides excellent performance under dynamic loads and seismic movements.
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