Union Strongbolt 5 Lever Deadlock BS3621 Satin Chrome 76mm 2100S
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
See our full range:
Description
Union Strongbolt 5 Lever Deadlock BS3621 Satin Chrome 76mm 2100S
When you are looking for the absolute gold standard in residential and commercial security hardware, this high-performance deadlocking solution stands out as a premier choice. Designed by industry leaders to meet the most rigorous demands of modern property protection, the Union Strongbolt 5 Lever Deadlock BS3621 Satin Chrome 76mm 2100S provides unparalleled peace of mind. Whether you are upgrading the entrance to your home or securing a sensitive area within a business, this unit offers the structural integrity and resistance to forced entry that professionals trust.
This deadlock has been engineered to provide a seamless balance between robust mechanical strength and smooth, reliable operation. By choosing this specific model, you are investing in a product that has been tested to the extreme limits of physical force and environmental stress. Its satin chrome finish does not merely provide an aesthetic touch of elegance to your door, but also ensures the hardware remains resistant to corrosion and the wear and tear of daily use over many years.
Advanced Security Features for Modern Properties
The engineering philosophy behind this lock focuses on mitigating the most common methods of illicit access. Every component is crafted to withstand physical manipulation, ensuring that your property remains secure against sophisticated and brute-force attacks alike.
- The internal mechanism features advanced anti-pick technology that prevents unauthorized individuals from manipulating the levers to retract the bolt.
- Hardened steel pins are integrated directly into the core to provide superior resistance against drill attacks that aim to compromise the internal locking geometry.
- A robust anti-saw mechanism is built into the deadbolt itself, which prevents thieves from using cutting tools to bypass the lock during a break-in attempt.
- The unique chamfered bolt design significantly increases the overall performance of the lock when subjected to heavy side load testing or door frame pressure.
- This design also makes the lock significantly harder to attack with a drill, as the angled surface causes drill bits to deflect away from the critical locking points.
Mechanical Physics and Structural Resilience
Understanding the physics behind this security hardware reveals why it is so effective at protecting your premises. When a door is forced, the primary point of failure is often the interface between the bolt and the strike plate. This unit features a 20mm deadbolt that extends deep into the door frame, providing a substantial barrier that resists the immense lateral forces applied during a forced entry attempt. The internal lever pack is designed with precise tolerances, ensuring that when the key is turned, the force is distributed evenly across the locking components to prevent fatigue and mechanical failure.
Furthermore, the material selection is vital to its long-term durability. By utilizing high-grade steel for the internal case and reinforcing it with a durable red powder coat, the manufacturer has ensured that the internal moving parts are protected from debris and moisture. This creates a stable environment for the levers and springs to operate without friction, meaning the lock will continue to perform smoothly even after thousands of cycles. The resistance to torque and shear forces is a testament to the high-quality alloys used in its construction, which are specifically chosen to prevent the metal from bending or snapping under extreme duress.
Operational Workflow and User Experience
Interaction with this deadlocking system is designed to be intuitive and ergonomic for every user. The process of securing your property is streamlined into a simple, three-stage physical interaction.
- To engage the lock from the outside, the user inserts the key into the cylinder and rotates it fully to throw the 20mm deadbolt into the secure position.
- The tactile feedback provided by the internal spring mechanism allows the user to feel exactly when the bolt has reached its fully extended state, confirming that the door is locked.
- To unlock the door, a simple reverse rotation of the key retracts the bolt smoothly, allowing for a quick and effortless exit or entry during daily routines.
- Because this item is designed for ease of use, even those with limited dexterity can operate the mechanism without needing to apply excessive force or struggle with the turning action.
Compliance and Professional Safety Standards
This lock is not just a piece of hardware, it is a certified security solution. It has earned the prestigious BS3621:2007 certification, which is the benchmark for locks in the United Kingdom. Being Secured by Design approved means it is officially recommended by the Police for its effectiveness in deterring crime, while its Certifire approval confirms it is suitable for use on fire-rated doors.
Investing in this level of hardware is a critical step in ensuring your building remains compliant with insurance requirements. Many insurance policies mandate the use of BS3621 locks for all external timber doors, and using anything less could lead to the invalidation of a policy in the event of a claim. By choosing this model, you are ensuring that your property meets the highest safety and security standards, providing an extra layer of protection for your family, your employees, and your valuable assets.
Commercial Value and Longevity
From a business perspective, the cost of replacing low-quality hardware frequently outweighs the initial investment in a premium product. This deadlock is built for longevity, significantly reducing the frequency of maintenance and replacement cycles. By installing a lock that is resistant to environmental degradation and physical attack, you minimize the risk of being locked out or having to repair a door frame damaged by a compromised locking unit. This long-term reliability protects your operational overheads, ensuring that your security budget is spent once on a high-quality solution rather than repeatedly on inferior alternatives.
Technical Specifications
The following table outlines the precise dimensions and standards that make this unit a versatile and reliable choice for a wide variety of door types and thicknesses.
| Feature | Specification |
|---|---|
| Case Size | 81mm (3 inches) |
| Backset | 57mm |
| Faceplate Dimensions | 134mm x 26mm |
| Case Height | 88mm |
| Bolt Throw | 20mm |
| Material Finish | Satin chrome plated forend |
| Standards | BS3621:2007, CE Marked, Certifire Approved |
| Door Suitability | Timber doors up to 54mm thick |
| Fire Rating | Suitable for 30 and 60 minute fire doors |
If you are not sure if this mortice lock is right for your requirements, please contact our friendly team today. Our experts are on hand to provide guidance on compatibility with your specific door type, ensuring that you select the perfect hardware for your security needs. Whether you are performing a full security upgrade or replacing a single faulty unit, we are here to help you make an informed decision.
Specification
| Manufacturer | Union |
|---|---|
| Dimensions | 89 (H) x 81 (D) |
| Guarantee | 10 Year |
| Lock Type | Mortice Deadlock |
| Lock Operation | Lever |
| Lock Backset | 57mm |
| Follower Size (mm) | 0 |
| Faceplate Width | 26mm |
| Environmental Suitability | All |
| Mechanism | Dead Lock |
| Door Material Suitability | Wood |
| Max Door Thickness (mm) | 54 |
| Forend Finish | Chrome |
| Security Standards | BS3621:2007 |


