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PAR-2103S-PB-76-DL
Union Strongbolt 3 Lever Deadlock Brass 76mm J2103
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Union Strongbolt J2103S Brass 76mm 3 Lever Deadlock CE Marked
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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. |
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£14.99
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Description
Mortice Locks
Union Strongbolt 3 Lever Deadlock Brass 76mm J2103
Securing a timber door requires a balance between reliable everyday operation and the technical capacity to withstand forced entry attempts in a residential setting. This 3 lever deadlock provides a direct solution for homeowners and trade professionals who need a dependable locking point that integrates into standard door thicknesses without requiring major structural adjustments or complex joinery skills to function effectively.
The polished brass finish offers a classic aesthetic that suits traditional internal doors while the internal components are built to survive years of repetitive use. Because this unit is engineered to fit into many existing mortices across the United Kingdom, it serves as an excellent replacement choice when upgrading door furniture or refreshing the hardware on an older property that requires a modern level of reliability.
76mm
CASE DEPTH
57mm
BACKSET
3 Lever
MECHANISM TYPE
CE Marked
SAFETY RATING
Why Choose the Union Strongbolt 3 Lever Deadlock Brass 76mm J2103
This lock delivers consistent security performance for internal timber doors through smart design choices and high-quality materials.
Anti-Saw Security
The internal mechanism features hardened steel pins which make the deadbolt resistant to cutting tools. This design choice prevents common methods of entry where intruders attempt to compromise the locking bolt itself, which means your property remains secure even when faced with direct physical intervention from someone trying to force the door.
Fire Door Certified
Compliance with fire safety standards is managed because this lock is fully tested for use on 30 and 60 minute fire doors. You can install this hardware with confidence in areas where building regulations specify fire resistance, so you satisfy your legal requirements while maintaining a high level of daily physical security.
Simplified Fitting
The radius inner forend and the overall case dimensions are crafted to align with many existing UK door mortices. This reduces the amount of extra carpentry needed to get the lock seated correctly in the door edge, which saves time for busy tradespeople and makes DIY installation a much more manageable task for homeowners.
Engineering Quality and Daily Performance
Every component inside the steel red powder coated case is engineered to ensure the deadbolt moves with precision and remains effective under pressure.
Internal Mechanism and Force Distribution
The 14mm deadbolt provides a substantial point of engagement with the striking plate when locked. By using a chamfered bolt design, the lock manages to maintain its performance even when a door experiences a side load, which prevents the bolt from jamming or failing to throw when the door frame shifts slightly during seasonal weather changes.
Three internal levers provide a positive locking action that feels smooth to the user while operating the key from either side of the door. The precision of these levers is balanced to prevent the key from sticking, which means you have a reliable way to secure your rooms every single day without the frustration of mechanical resistance or sticky turning cycles.
Weather Resistance and Long-Term Finish
The outer components are finished with a durable brass plating that offers an attractive look and guards against typical surface wear that happens in busy households. While this lock is primarily designed for internal timber doors, the choice of materials is intended to resist standard household humidity levels that often cause cheaper hardware to corrode or lose its visual appeal too quickly.
Steel parts inside the case are protected by a red powder coat that serves as a shield against the buildup of debris or moisture over time. This layer of protection keeps the moving parts working as intended for many years, which makes the product a sensible investment for anyone wanting hardware that does not require constant attention or premature replacement due to internal mechanical fatigue.
Installation and Operational Workflow
Following these clear steps will ensure your new deadbolt functions correctly and remains secure for the long term.
1
Mortice Preparation
Check the door edge to ensure the existing mortice matches the 76mm case depth and 89mm height required for the unit. You might need to gently chisel out small sections of the timber to accommodate the radius forend, so move slowly to ensure the lock plate sits flush with the surface of the door frame for a tidy finish.
2
Lock Insertion
Slide the lock case into the cavity and secure it through the faceplate using the provided screws. Ensure the mechanism sits square within the door edge because any misalignment will cause the bolt to drag against the strike plate, which could create unnecessary friction and lead to a stiff locking action when you insert the key.
3
Strike Plate Alignment
Fix the striking plate to the door frame so the deadbolt enters the hole perfectly when extended. You should test the lock operation with the door closed to verify that there is no tension between the bolt and the plate, which helps the mechanism last longer because it is not straining against an incorrectly positioned frame piece.
Expert Installation and Care Tip
Always lubricate the keyway once a year using a light silicone spray to keep the levers moving smoothly. Avoid using thick oils or greases inside the mechanism because these can attract dust and eventually cause the lock to seize up over time.
Technical Specifications
| Feature | Rating / Standard | Practical Details |
|---|---|---|
| Case Size | 81mm Total | Includes the full length of the internal housing for mortice measurement. |
| Backset | 57mm | Distance from the edge of the door to the centre of the keyhole. |
| Faceplate | 134mm x 26mm | Standard sizing that fits many existing door edge profiles in the UK. |
| Fire Resistance | 30 and 60 Minutes | Approved for use on fire-rated doors to meet building regulations. |
| Keys | 2 Steel Nickel Plated | Standard key set provided for immediate use upon installation. |
Longevity and Trade Reliability
This lock is tested to BS EN 12209 standards, which demonstrates its capacity to endure thousands of cycles of use in a domestic or light commercial setting. You are choosing a piece of hardware that balances traditional design with modern manufacturing consistency to provide a secure and stable locking point for your timber doors.
Compatibility and Fitting Notes
This deadlock is suitable for timber doors that are hinged on either the left or the right side, so it is versatile for most common door configurations found in residential homes.
Ensure your door thickness does not exceed 54mm to keep the lock components aligned correctly and to allow for standard mounting of the escutcheons or plates.
Always verify the current mortice size before purchasing because changing the hole size in a finished door is a more involved process than selecting a compatible lock depth.
Specification
| Manufacturer | Union |
|---|---|
| Finish | Polished Brass |
| Guarantee | 10 Year |
| Lock Type | Mortice Deadlock |
| Lock Operation | Lever |
| Lock Backset | 57mm |
| Follower Size (mm) | N/A |
| Faceplate Width | 26mm |
| Environmental Suitability | All |
| Mechanism | 1 Dead Bolt |
| Door Material Suitability | Wood |
| Max Door Thickness (mm) | 54 |
| Forend Finish | Polished Brass |