Temporary fencing lockable security clamps
Our lockable Heras fencing anti-tamper couplers provide an added layer of perimeter security for temporary fence panels. Designed for construction sites, events, and high-risk areas, these couplers include a locking mechanism that requires a special anti-tamper security spanner for tightening and loosening (sold separately), making them tamper-resistant. Also referred to as:
- Security couplers.
- Lockable couplers.
- Tamper-resistant clamps.
- High-security clips.
Note: The anti-tamper spanner for these couplers is sold separately. Please include it in your order for proper use.
Key features
- Enhanced Security: The bolt and security nut design prevent tampering without a specialised spanner.
- Durable construction: Made from robust galvanised carbon steel for long-lasting use in outdoor environments.
- Easy installation: Designed with two halves that clamp around the Heras fence panels’ tubing.
- Versatile compatibility: Ideal for use on all standard Heras fencing systems.
| Specifications | Dimensions |
| Condition | NEW |
| Length | 140mm |
| Width | 75mm |
| Thickness | 35mm |
| Connects To | Temporary Fencing Panels |
| Type | Electro-Galvanised Carbon Steel, |
| Weight | 0.4kg Approx. |
| Standard | BS EN 10244-2 |
Heras security coupler FAQs
Why choose anti-tamper couplers?
Reliable: Widely used by contractors and event organisers for a secure fencing line.
Affordable upgrade: Easily fits existing Heras systems.
Compliant & safe: Meets industry standards for temporary Heras fencing.
What are the dimensions of a Heras anti-tamper fence coupler?
This product has the approximate dimensions as follows:
- Height: 140mm.
- Depth: 75mm.
- Width: 35mm.
What is the weight of this coupler?
An anti-tamper lockable fencing coupler weighs approximately 0.41kg.
What does anti-tamper mean?
Anti-tamper refers to a specialised security design that prevents unauthorised tightening, loosening, or removal of the coupler without the correct tool. Each coupler is engineered with a unique security nut-and-bolt system that can only be adjusted with a dedicated anti-tamper spanner (sold separately). Additionally, the smooth, rounded edges eliminate grip points, making it impossible to force or pry the coupler open with standard tools, ensuring maximum protection against tampering and unauthorised access to your Heras fencing perimeter.
How do you connect this coupler to Heras fence panels?
Installation is straightforward and identical to using standard Heras clips:
- Place the two coupler halves around the vertical upright tubes of adjacent fence panels.
- Insert the bolt through the aligned holes.
- Securely tighten the security nut using the anti-tamper spanner (sold separately).
This simple process creates a strong, tamper-resistant connection that maintains complete perimeter integrity.
How many are required per panel?
For maximum security and stability, we recommend using two anti-tamper couplers per fence panel.
Why use two couplers per panel?
- Enhanced security: Installing two couplers per panel creates a stronger, more secure connection between fence panels. This setup makes it significantly harder for unauthorised individuals to tamper with, dismantle, or breach the perimeter.
- Improved stability: Dual couplers provide greater structural support, increasing resistance to wind, impact, and environmental forces. This helps to stop the panels from shifting, leaning, or becoming dislodged during adverse weather conditions.
Can they be used with hoarding and barriers?
Yes, anti-tamper fencing couplers are fully compatible with construction site hoarding and barrier systems. These lockable security couplers can be used as long as the hoarding or barrier panels feature standard upright tubing or compatible frame structures. They clamp securely in place, delivering the same high level of tamper resistance and perimeter protection. Ideal for:
- Construction site hoarding.
- Event barriers.
- High-value asset protection.
- Temporary secure enclosures.
Q & A
Anti-Tamper Heras Fencing Couplers
