Martin 3 lever union lock

Secure your home or office with the reliable quality of the Martin 3 Lever Union Lock, a trusted name in mortise lock hardware.
Whether you need privacy for internal bedroom doors or basic security for light-use external entrances, this 3-lever lock offers the perfect balance of dependable performance and cost-effective value.
With its connection to the esteemed Union brand heritage, this lock represents generations of British hardware manufacturing expertise, delivering smooth operation and lasting durability for residential and commercial applications.

Trusted Union Heritage
The “union” designation in this Martin 3 lever lock connects it to one of the most respected names in British lock manufacturing.
Union locks have been trusted by builders, architects, and homeowners for generations, known for their robust construction and reliable performance.

Martin 3 lever union lock

By carrying this designation, the Martin lock signals its adherence to traditional manufacturing standards and its compatibility with the extensive range of Union-compatible door furniture and accessories.
This heritage provides confidence that your lock is built to last.

3-Lever Mechanism for Enhanced Security
At the heart of this lock is a precision 3-lever mechanism that offers enhanced security compared to basic 2-lever designs.
The three spring-loaded brass levers must be lifted to precise heights by the key’s unique bitting pattern before the bolt can be withdrawn.
This configuration provides a higher number of possible key combinations, making it more resistant to picking and unauthorized key duplication.
While not suitable for high-security external doors (where a 5-lever BS3621 lock is recommended), the 3-lever mechanism is ideal for internal doors and external applications where moderate security is sufficient.

What is the difference between a 3-lever and 5-lever lock?
Understanding the distinction between lever lock types helps you choose the right product for your needs:

• 3-Lever Locks: Provide adequate security for internal doors (bedrooms, bathrooms, offices) and light-use external doors where the risk level is lower.
  They offer fewer key combinations than 5-lever locks and are not typically insurance-compliant for main entrance doors.

• 5-Lever Locks: Offer a higher number of key combinations and are manufactured to meet BS3621 British Standard for thief-resistant locks.
  They are required by most UK insurance policies for external doors and provide superior resistance to picking and forced entry.

The Martin 3 lever union lock is perfect for internal applications where privacy and moderate security are the primary concerns.

Durable Steel Case Construction
Built to withstand years of daily use, the Martin 3 lever union lock features a robust steel case that protects the precision internal mechanism.
The case is designed to resist impacts and prevent warping or binding that could affect operation over time.
Inside, the brass levers are precision-manufactured to ensure smooth key action and consistent lifting without sticking.
The latch bolt operates positively with each door closure, and the deadbolt extends and retracts cleanly when the key is turned.
This robust construction ensures the lock will provide reliable service for the life of the door with minimal maintenance.

Available Center Options for Door Compatibility
The Martin 3 lever union lock is available in two standard center measurements to accommodate different door thicknesses and handle configurations:

• 64mm Center: Designed for thinner internal doors (typically 35-40mm thick), common in many modern homes for bedroom and bathroom doors.

• 76mm Center: Suitable for standard 44mm (1-3/4 inch) doors, offering compatibility with a wider range of door handle designs.

Choosing the correct center measurement is essential for proper fit and operation.
The center distance is the measurement between the center of the keyhole and the center of the follower (the square hole where the door handle spindle passes through).
Always measure your existing lock or your door’s preparation before ordering to ensure compatibility.

What applications are suitable for a 3-lever lock?
A Martin 3 lever union lock is designed for internal use and light external applications where security against forced entry is not the primary requirement.
Ideal applications include:

• Bedroom Doors: Providing privacy for family members while allowing keyed access when needed.

• Bathroom and WC Doors: Offering essential privacy with keyed access from outside.

• Study or Home Office Doors: Keeping work spaces private and undisturbed.

• Storage Closets and Cupboards: Securing household items from casual access.

• Light External Use: Back doors or side entrances in low-risk areas (check insurance requirements).

For main entrance doors exposed to the elements or requiring maximum security, a 5-lever lock meeting BS3621 standards is always recommended.

Satin Chrome Finish for Modern Appeal
The Martin 3 lever union lock features an elegant satin chrome finish that complements both contemporary and traditional interior designs.
This popular finish offers several advantages:

• Modern Aesthetic: The subtle sheen of satin chrome works beautifully with both cool and warm color palettes.

• Durability: The plated finish resists tarnishing, corrosion, and fingerprint smudges.

• Easy Maintenance: Simply wipe clean with a soft, damp cloth as needed.

• Consistent Appearance: Match with satin chrome door handles and accessories throughout your property.

How do I install a Martin mortise lock?
Installation of a mortise lock requires basic woodworking skills and appropriate tools.
The process involves:

1. Marking the door edge using the template provided with the lock.

2. Cutting a recess (mortise) in the door edge to accept the lock case.

3. Drilling holes through the door face for the keyhole and spindle.

4. Inserting the lock case and securing it with screws through the faceplate.

5. Installing the door handles through the follower.

6. Marking and fitting the strike plate to the door frame.

Proper alignment is essential for smooth operation.
If you are unsure about any step, professional installation by a carpenter or locksmith is always recommended.

Maintenance for Long-Term Performance
To keep your Martin 3 lever union lock operating smoothly for years, occasional maintenance is beneficial:

• Lubrication: If the lock becomes stiff or the key difficult to turn, apply a small amount of graphite powder to the key and work it into the mechanism.
  Avoid using oil-based lubricants, as they can attract dust and eventually gum up the levers.

• Cleaning: Wipe the faceplate and visible components with a soft, damp cloth as needed.

• Screw Checks: Periodically ensure all mounting screws remain tight, as normal use can cause slight loosening.

• Alignment: Verify that the latch properly engages the strike plate and that the door closes without binding.

What keys are included?
The Martin 3 lever union lock typically comes with two nickel-plated keys designed specifically for the 3-lever mechanism.
These keys are straightforward to duplicate if additional copies are needed, and the precision-cut bitting ensures smooth operation.
The keys are finished to resist corrosion from normal handling.

Complete Your Interior Door Project
Whether you’re building a new home, renovating existing rooms, or simply replacing worn-out hardware, the Martin 3 lever union lock offers the perfect combination of reliable security, smooth operation, and trusted heritage.
Available in standard center sizes and finished in satin chrome, these locks are the practical choice for bedrooms, bathrooms, offices, and light external applications throughout your property.

Order your Martin 3 lever union lock today and enjoy the peace of mind that comes from knowing your doors are secured by trusted, quality hardware.

Martin 3 lever union lock available in Mombasa, Kwale, Kilifi, Lamu, Mandera, Marsabit, Isiolo, Meru, Embu, Kitui, Machakos, Makueni, Nyandarua,

Nyeri, Kirinyaga, Murang’a, Kiambu, Turkana, Samburu, Trans Nzoia, Uasin, Gishu, Elgeyo Marakwet, Nandi, Baringo,

Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet, Kakamega, Vihiga, Bungoma, Busia, Siaya, Kisumu, Homa Bay, Migori, Kisii, Nyamira, Nairobi.

In Nairobi you can find them at: Westlands, Dagoretti,  Lang’ata, Starehe, Kamukunji, Embakasi, and Kasarani, Kibera, Mathare,

Eastleigh, Karen, Lavington, Westlands, Parklands, Runda, South C, South, Ngong Road

In Mombasa you can find us at : Nyali, Mwembe Tayari, Majengo, Likoni ,Bamburi, Miritini