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YAL84SCPDMG
Yale 84 40mm Non Deadlocking Nightlatch DMG/SC
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Yale 84 40Mm Met Grey Scp Night Latch door lock with 2 keys Non Deadlock Door Locking
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| 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. |
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£43.70
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£36.42
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Description
Yale 84 40mm Non Deadlocking Nightlatch DMG/SC
Security is the foundation of any peaceful home or productive workplace. When selecting hardware to protect your entryways, the Yale 84 40mm Non Deadlocking Nightlatch DMG/SC stands out as a quintessential choice for those who value reliability and straightforward operation. This piece of hardware represents a long-standing tradition of engineering excellence, providing a sturdy barrier between your internal environment and the outside world.
Designed with a narrow style profile, this item integrates seamlessly into various door types without compromising on structural integrity. Whether you are upgrading an existing entrance or fitting out a new property, understanding the mechanical nuances of your security hardware is essential for long-term peace of mind. This model offers a balance of accessibility and protection, ensuring that your daily routine remains smooth while keeping your premises secure.
The Mechanics of Security and Force
At the heart of this hardware lies a sophisticated spring-loaded mechanism that governs the interaction between the latch bolt and the strike plate. When the door closes, the bevelled edge of the latch bolt encounters the strike, forcing the internal spring to compress. This stored potential energy is released the moment the bolt reaches the strike aperture, allowing the door to snap shut securely. The material composition of the housing is engineered to resist lateral forces, preventing the latch from buckling under pressure or through repeated vibrational stress over many years of use.
The internal components are designed to minimise friction, which is a critical factor in preventing premature wear on the moving parts. By reducing the coefficient of friction, the unit operates with a fluid, tactile response that gives the user immediate feedback regarding the state of the door. The dark metallic grey finish is not merely aesthetic, as it provides a resilient layer that protects the underlying metal from oxidation and atmospheric moisture, which is vital for hardware installed on external-facing doors.
Operational Workflow and User Interaction
Operating this nightlatch is a masterclass in ergonomic design. From the outside, the process is initiated by the insertion and rotation of the key within the Yale 1109 cylinder. The mechanical linkage translates this rotational torque into a linear withdrawal of the latch bolt, allowing for effortless ingress. Once the key is released, the cylinder returns to its neutral state, maintaining the security of the lock.
From the inside, the user interacts with the system via a lever handle, which provides a comfortable grip and sufficient leverage to retract the bolt with minimal physical effort. This is particularly important for accessibility, as the design ensures that even individuals with limited hand strength can operate the door without strain. The inclusion of a snib button allows for a secondary mode of operation. By toggling this button, the user can choose to hold the latch in a withdrawn position, which is exceptionally useful when you are moving items through the doorway or when you wish to leave the door unlocked for a period of time during the day.
Ergonomics and Safety Compliance
The ergonomic profile of this hardware is specifically crafted to reduce physical fatigue in high-traffic environments. Because the lever handle requires very little force to actuate, it prevents the repetitive strain that can occur with poorly designed or stiff locking mechanisms. Furthermore, the snib function serves as a safety feature, allowing for rapid egress in situations where you might need to leave the building quickly without fumbling for keys. By standardising your hardware with such intuitive controls, you significantly lower the probability of operational errors, such as accidentally locking yourself out or failing to engage the latch properly.
Compliance with modern safety standards is another benefit of choosing a reputable manufacturer. This equipment is built to withstand the rigours of daily use in both residential and light commercial settings. By ensuring that your door hardware meets these functional requirements, you are creating a safer environment for occupants, reducing the likelihood of maintenance-related accidents, and ensuring that your doors remain compliant with general building security expectations.
Commercial ROI and Long Term Value
Investing in high-quality hardware is a strategic decision that pays dividends over the lifecycle of the building. While lower-cost alternatives might seem attractive initially, they often lack the durability required to withstand the thousands of cycles that a main entrance door experiences annually. This model is constructed from premium materials that resist the mechanical fatigue associated with constant latching and unlatching. By choosing a robust solution, you minimise the frequency of replacement cycles, which in turn reduces the administrative and maintenance overheads associated with managing property security.
Furthermore, protecting your assets from unauthorised access is the most significant return on investment any property owner can hope for. The reliability of the Yale 1109 cylinder ensures that the lock remains resistant to tampering, providing a consistent level of security that protects your inventory, equipment, and personal belongings. Over a decade, the cost savings generated by avoiding emergency locksmith call-outs and hardware replacements far outweigh the initial investment in this premium nightlatch.
If you are not sure if this nightlatch is right for your requirements please contact our friendly team today. Our experts are ready to assist you with technical advice and product selection to ensure your property remains secure.
Technical Specifications
To ensure that this unit is the correct fit for your specific door, please review the following technical parameters. These specifications have been verified to support high-performance standards in standard residential and light commercial door applications.
| Feature | Specification |
|---|---|
| Product Name | Yale 84 40mm Non Deadlocking Nightlatch DMG/SC |
| Backset Measurement | 40mm |
| Cylinder Included | Yale 1109 |
| Keying | 2 Keys Supplied |
| Snib Function | Yes, internal hold-back feature |
| Door Compatibility | Left or Right handed, Inward opening |
| Maximum Door Thickness | 57mm |
| Body Finish | Dark Metallic Grey |
| Cylinder Finish | Satin Chrome |
| Security Level | Standard Security |
| Guarantee | 2 Year Manufacturer Guarantee |
Suitable Applications and Material Compatibility
The versatility of this item makes it an ideal choice for a wide range of door materials, including solid timber, engineered wood, and composite doors. Because of its narrow style, it is particularly effective on doors with limited frame space where bulkier locking mechanisms would simply not fit. The 40mm backset is a common industry standard, ensuring that it can replace many existing locks without requiring extensive modification to the door leaf. This ease of retrofitting is a significant advantage for those looking to upgrade their security without the need for expensive joinery work.
When installing this hardware, it is recommended to ensure that the door frame is in good condition and that the strike plate is properly recessed to allow for the smooth movement of the latch bolt. Proper alignment is the key to maximising the lifespan of the unit. When the bolt strikes the plate cleanly and without obstruction, the internal spring mechanism is subjected to less lateral stress, which preserves the integrity of the housing and the snib button mechanism. By paying attention to these small installation details, you ensure that the Yale 84 40mm Non Deadlocking Nightlatch DMG/SC performs to its full potential for many years to come.
Ultimately, your choice of door furniture reflects your commitment to the safety and functionality of your property. By opting for a trusted brand and a well-engineered design, you are making a clear statement about the importance of quality. This model does not just provide a locking point; it provides a reliable, user-friendly, and durable solution that addresses the fundamental needs of modern door security. Whether you are a professional contractor or a homeowner looking for a DIY upgrade, this product offers the perfect blend of simplicity and robust performance to meet your needs.
Final Considerations for Your Purchase
Before finalising your selection, consider the orientation of your door and the specific requirements of your frame. As this item is suitable for both left and right-handed applications, it offers maximum flexibility during the installation phase. Remember that the 2-year guarantee provides additional confidence in your purchase, reflecting the manufacturer's belief in the longevity and build quality of their components. Should you have any questions regarding the compatibility of this lock with your specific door measurements or if you require assistance with the installation process, our team at Doorfit is always here to provide the guidance you need.
Choosing the right security hardware is a process that balances technical requirements with practical needs. The Yale 84 40mm Non Deadlocking Nightlatch DMG/SC is designed to simplify this process, offering a comprehensive package that is ready to install and built to last. Take the step today to enhance your property's security and enjoy the peace of mind that comes with using industry-leading hardware from a trusted source. We look forward to helping you secure your world with the very best in locking technology.
Specification
| Manufacturer | Yale |
|---|---|
| Finish | Dark Grey |
| Dimensions | 70 (H) x 62 (D) |
| Guarantee | 2 Year |
| Lock Type | Rim Nightlatch |
| Lock Operation | Rim Cylinder |
| Lock Backset | 40mm |
| Follower Size (mm) | 0 |
| Faceplate Width | N/A |
| Environmental Suitability | All |
| Mechanism | Latch |
| Door Material Suitability | Wood |
| Max Door Thickness (mm) | 57 |
| Forend Finish | N/A |