Stainless Steel Back Cut Anchor Bolt

The Stainless Steel Back Cut Anchor Bolt by Wanluo supplier completely eliminates expansion stress and substrate cracking problems caused by traditional expansion fasteners. Featuring zero expansion force, high load-bearing capacity, hidden installation and ultra-high safety, it is the designated standard fastener for high-end curtain wall engineering and permanent decorative fixing projects.

Structural Features & Manufacturing Technology

The Stainless Steel Back Cut Anchor Bolt one-piece precision CNC machining and integral toughening treatment, consisting of precision threaded rod, conical expansion core, split undercut sleeve, flat washer and hex locking nut. The special split sleeve structure can open and fit the custom undercut hole wall 100% without local point pressure. The precisely matched conical core ensures uniform and synchronous opening of the sleeve, forming a full-circle mechanical bite with the substrate counterbore. Rolled standard metric threads deliver smooth locking, uniform stress and repeated locking stability. Manufactured from high-purity stainless steel and high-strength carbon steel, the product undergoes strict tensile and shear testing, with no expansion stress during installation, effectively protecting brittle substrates such as stone, ceramic and concrete from cracking and damage. The overall structure is weather-resistant, corrosion-resistant and fatigue-resistant, ensuring long-term safe anchoring.

Product Parameter

Core Advantages & Industrial Applications

1. stainless steel back cut anchor’s zero expansion stress undercut locking design fundamentally solves the cracking problem of brittle stone and decorative plates caused by expansion extrusion of traditional wedge anchors, ensuring intact and flawless substrate installation.

2. Rigid mechanical interlock formed by bottom reaming and full-circle fitting provides higher bearing capacity and pull-out resistance than ordinary expansion anchors, with stable performance under long-term wind pressure, vibration and alternating load.

3. Hidden embedded installation realizes flat and beautiful surface without protruding parts, perfectly matching high-standard architectural decoration requirements, widely recognized and adopted by high-end curtain wall engineering projects.

4. Uniform full-circle stress structure avoids local stress concentration, effectively resisting natural temperature change and building micro-deformation, preventing plate falling off and anchoring failure, improving overall engineering safety.

5. Corrosion-resistant stainless steel and high-strength carbon steel options adapt to indoor decoration, outdoor buildings, coastal humid and high-salt environments, covering curtain wall installation, stone fixing, decorative engineering and precision building anchoring scenarios.

FAQ

Q1: What is the difference between Stainless Steel Back Cut Anchor Bolt and wedge anchors?

A1: Wedge anchors rely on extrusion friction with expansion stress, easy to crack brittle substrates; back cut anchors adopt undercut mechanical interlock with zero expansion force, no substrate damage, higher safety and bearing capacity, specially designed for stone and curtain wall precision fixing.

Q2: Does installing back cut anchors require special tools?

A2: Yes. Professional undercut reaming drill bits are required for bottom hole expanding processing to form standard counterbore grooves. Standard drilling tools cannot meet the undercut fitting requirements to ensure locking stability.

Q3: What scenarios are back cut anchors suitable for?

A3: Mainly used for high-end building curtain walls, marble and granite decoration, ceramic plate fixing, precision building exterior wall decoration and other scenarios requiring no cracking, beauty and high safety factor.

Q4: Will back cut anchors loosen after long-term use?

A4: No. It adopts rigid mechanical bite locking instead of friction locking. It will not loosen due to wind vibration, temperature difference and structural micro-movement, achieving permanent and safe anchoring effect.

Q5: Can customized special-length back cut anchors be provided?

A5: Yes. We support customizing non-standard rod lengths, undercut sizes and high anti-corrosion surface treatments to meet personalized installation requirements of special curtain wall and decoration projects.