Apply Discount Code
TIT-MACO-MA57166-800
Maco 800mm Offset Window Lock Espagnolette 25mm Backset MA57166
Main image
Click to view image in fullscreen
![]()
Maco 800mm Offset Window Lock Espagnolette 25mm Backset MA57166
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. |
View Delivery Information
£13.68
Incl. VAT
£11.40
Excl. VAT
Incl. VAT
Excl. VAT
Incl. VAT
Excl. VAT
Price is for/per each
-
+
See our full range:
Description
Maco 800mm Offset Window Lock Espagnolette 25mm Backset MA57166
Securing your property requires reliable hardware that stands the test of time and environmental stress. This high performance window mechanism offers a robust solution for homeowners and contractors looking for industry leading security standards.
Designed for precision and ease of use, the Maco 800mm Offset Window Lock Espagnolette 25mm Backset MA57166 ensures that side hung and top hung windows operate smoothly while maintaining a locked position that resists forced entry. Whether you are refurbishing older frames or installing new high specification glazing, this hardware provides the mechanical stability necessary for long term peace of mind.
Understanding the Mechanical Physics of Secure Locking
When you engage the handle on your window, you are initiating a complex sequence of mechanical forces. This espagnolette system translates the rotational torque from the handle into a linear force that travels along the length of the metal bar.
The mushroom head cams act as critical points of resistance against tension and lateral movement. Because the components are crafted from high grade materials, the system prevents structural flex even under significant pressure. This design ensures that the load is distributed evenly across the frame of the window, minimising wear on the individual locking points while maximizing the strength of the seal.
Operational Workflow for Daily Use
Operating this hardware is a seamless experience designed for simplicity. When a user turns the window handle, the internal gearing system pushes the steel rod forward with minimal resistance. This movement brings the mushroom cams into contact with the striker plates or keeps located on the window frame.
As the cams slide into their locked positions, they create a compression force that pulls the sash tightly against the frame. This compression is vital for both security and thermal efficiency, as it ensures there are no gaps where air or moisture could penetrate. The user feels a smooth, consistent tension that confirms the window is correctly sealed and secured.
Versatility Across Window Profiles
This Maco 800mm Offset Window Lock Espagnolette 25mm Backset MA57166 is engineered for maximum compatibility. Its design accommodates a wide variety of installation scenarios, making it a go to choice for professional window fabricators.
- The mechanism is fully suitable for installation on PVCu, aluminium, and timber window frames without requiring extensive modification.
- The versatile build works perfectly for both side hung and top hung window configurations.
- Users can install this equipment on profiles that feature a standard 16mm eurogroove or those without one, providing excellent flexibility for different window designs.
- The mushroom head cams can be easily adjusted to compensate for minor frame movements or gasket settling, ensuring a perfect fit throughout the life of the product.
- An integrated 7.7mm cam height provides the ideal clearance for most modern locking keeps, ensuring that the interface between the lock and the frame remains friction free.
Ergonomics and Safety Compliance
Safety extends beyond mere security, encompassing the ease of operation that prevents repetitive strain or physical fatigue for the user. By utilising premium internal components, this window hardware requires very little physical force to operate. This makes it an ideal selection for residential environments where ease of access is a priority.
Furthermore, the manufacturing process adheres to rigorous industry standards including BS644, BS4873, and BS 7412. These certifications prove that the item has been rigorously tested against real world environmental challenges. The silver chromate finish is tested to BS EN 1670 Grade 5, providing exceptional corrosion resistance in coastal or high humidity areas. This protects the hardware from rust and oxidation, which are common culprits in mechanical failure.
Commercial ROI and Long Term Asset Protection
Investing in high quality locking hardware provides a clear return on investment for any property manager or homeowner. When you install durable components like this Maco 800mm Offset Window Lock Espagnolette 25mm Backset MA57166, you are drastically reducing the need for costly maintenance cycles. Frequent repairs are not only an administrative burden but also a recurring operational expense that adds up over time.
By choosing hardware that is built to endure, you protect your valuable glazing investment from premature deterioration. Robust security hardware acts as a deterrent to intruders, which can contribute to more favourable insurance premiums. The consistency of this design ensures that replacements, if ever needed years down the line, are straightforward and predictable, saving you time and labour costs.
Technical Specifications
| Feature | Specification |
|---|---|
| Product Name | Maco 800mm Offset Window Lock Espagnolette |
| Backset | 25mm |
| Cam Height | 7.7mm |
| Material Suitability | PVCu, Aluminium, Timber |
| Corrosion Resistance | BS EN 1670 Grade 5 Silver Chromate |
| Standard Compliance | BS644, BS4873, BS 7412 |
| Screw Recommendation | 4mm or No.8 Countersunk Head |
| Handle Fixing | M5 Machine Screw |
Need Expert Guidance?If you are not sure if this window espag lock is right for your requirements, please contact our friendly team today. We are here to help you select the exact hardware needed for your specific window profile and security goals.
Choosing the right hardware is the most important step in maintaining the integrity of your home. This window espag lock is designed to bridge the gap between heavy duty security and smooth, ergonomic operation. With its versatile fitting options and durable finish, it represents a standard of quality that property professionals trust.
For those managing large scale projects or individual home upgrades, the reliability of this mechanism ensures that your windows will function exactly as intended for many years to come. Do not leave your property security to chance. Invest in the strength and precision of established, compliant engineering today.
Specification
| Window Material Suitability | UPVC / Wood / Metal |
|---|---|
| Window Operation | Hinged |
| Faceplate Width | 16mm |
| Lock Backset | 25mm |
| Roller Height | 7.7mm |
| Gear Type | Offset |