When it comes to window safety, every component matters – not just the restrictor itself. At Jackloc, we’ve always believed that genuine safety comes from engineering every single detail to the highest possible standard. That’s why, when you invest in an original Jackloc window restrictor, you receive something no competitor offers:
Our exclusive grade 4 clutch-head security screws.
These screws are designed specifically for Jackloc products and form a critical part of the overall safety system. They’re not an afterthought, not a cheap add-on, and not something you can purchase elsewhere. They’re engineered, tested, and manufactured to support our mission of preventing accidents and saving lives, and they offer a level of security that traditional screws simply cannot match.
Why security screws matter in window restrictor performance
While many window restrictors on the market rely on standard screws, this creates two major problems:
- Standard screws can be removed with simple household tools.
A screwdriver, drill bit, or even persistent pressure can weaken them, compromising the restrictor and creating a serious safety risk
- Improper or loose installation reduces the restrictor strength dramatically.
If the screws are poorly fitted, installed with the wrong tool, or begin to degrade over time, the restrictor cannot perform as intended. This is one of the most common causes of product failure across the industry.
Our security screws are engineered to solve every one of these industry-wide issues.
Anti-tamper by design
The clutch-head design can’t be removed with a standard screwdriver. This prevents unauthorised tampering – a crucial layer of protection for care homes, housing associations, hospitals, student accommodation, hotels, and family homes.
Built for structural integrity
When combined with our UK-engineered window restrictors, these screws create a complete safety system designed to exceed British Standards, not just meet them.
A complete system – tested to exceed British Standards
Jackloc window restrictors are tested well beyond the British Standard requirement of 600N. In fact, all of our products withstand forces significantly exceeding this benchmark, because we design for real-world safety, not minimum compliance.
But strength testing doesn’t stop at the restrictor. Our tests also factor in:
- Fixing strength
- Screw integrity
- Long-term load
- Tamper resistance
It’s this whole-system approach that makes Jackloc the safest choice on the market.
Competitors may offer cheaper screws. We offer safer solutions.
This is where Jackloc stands apart, because we see screws not as accessories, but as essential safety components.
Why we don’t sell our security screws separately
Our security screws are engineered specifically for our restrictors and designed to work as part of the Jackloc safety ecosystem. We will never compromise customer safety by allowing substandard restrictors to be paired with our high-grade screws.
Why this matters for specifiers, installers & building managers
Whether you manage a care home, maintain social housing stock, specify products for hospitals, or oversee safety in hotels or student accommodation, the choice of window restrictor matters.
Considering Jackloc for your next project?
Our team is always happy to advise on product choice, installation, regulations, and best practices for your sector.
Visit our product range, or speak with our sales team!
