The High Security V10 Euro Cylinder represents a professional-grade locking solution designed to withstand the most common methods of forced entry. This 40/50mm offset double cylinder (90mm total length) is specifically engineered for thicker or asymmetrical doors, providing keyed access from both the internal and external sides.

As a Keyed to Differ (KTD) unit, each High Security V10 Euro Cylinder is supplied with its own unique set of keys, ensuring individual security for every installation—making it the ideal choice for residential front doors, commercial offices, and multi-occupancy buildings.

Technical Specifications of High Security V10 Euro Cylinder

The High Security V10 Euro Cylinder series is manufactured to tight tolerances using high-tensile materials, ensuring smooth mechanical operation and long-term resistance to environmental wear.

Feature	Detailed Specification
Cylinder Type	Euro Profile Double Cylinder (Key/Key)
Size / Offset	40mm / 50mm (90mm Total Length)
Security Rating	V10 High-Security Series
Keying Options	Keyed to Differ (Unique key per lock)
Anti-Pick	Multiple mushroom-headed pins to thwart picking
Anti-Drill	Hardened steel pins in body and plug
Anti-Bump	Specialized driver pins to prevent kinetic “bumping”
Material	Solid Brass Core with Architectural Finishes
Available Finishes	Satin Nickel, Polished Brass, Polished Chrome

Security & Engineering Advantages

Multi-Point Attack Resistance: The V10 core is reinforced with hardened steel inserts. These “anti-drill” zones are strategically placed to protect the shear line and the plug, significantly delaying or preventing drilling attempts.
Precision Pin Tumbler System: The internal pin stack is designed with varying shapes and heights. This “anti-pick” geometry makes it exceptionally difficult for intruders to feel the “set” of the pins, providing a robust defense against sophisticated manipulation.
The 40/50 Offset Advantage: Modern high-performance doors—particularly those with deep decorative molding or high-security multi-point locks—often require an asymmetrical cylinder. The 40/50 split ensures that the cylinder face sits perfectly flush with the escutcheons on both sides of an offset door.
Corrosion-Resistant Internals: All springs and pins are manufactured from non-corrosive materials. This prevents the lock from “seizing” in damp or coastal environments, ensuring the key turns effortlessly year after year.

Primary Applications

UPVC & Composite Front Doors: The perfect high-security upgrade for standard domestic doors that require a 90mm total span.
Commercial Office Entrances: Provides reliable, individual security for internal office doors where “Keyed Alike” systems are not required.
High-Traffic Apartment Doors: A durable, cost-effective solution for landlords who need to change locks frequently between tenants while maintaining high security.
Security Gates & Outbuildings: The weather-resistant core makes it suitable for external-facing cylinders in garden gates or secure garages.

Professional Installation Tip: Measuring and Alignment

A High Security V10 Euro Cylinder must be measured correctly to ensure it is both secure and aesthetically pleasing once installed.

How to Measure 40/50: Remove your existing lock and measure from the center of the fixing screw hole to both ends. One side should be 40mm and the other 50mm. The 50mm side typically faces the side of the door with thicker hardware or molding.
The “Flush Fit” Rule: For maximum security, the High Security V10 Euro Cylinder should not protrude more than 3mm from the face of the door or the protective escutcheon. A lock that sticks out too far is vulnerable to “lock snapping” tools.
Lubrication: Never use traditional oil or WD-40 inside a high-security cylinder, as it can gum up the precision pins. Always use a dedicated PTFE-based dry lubricant or graphite powder once every six months.
Fixing Screw Torque: When installing the central M5 fixing screw, ensure it is tight but do not over-torque it. Excessive pressure can slightly bow the cylinder body, leading to a “heavy” or “notchy” feel when turning the key.

Protect your doors with the High Security V10 Euro Cylinder – Keyed to Differ, a high-quality lock designed for strength, precision, and long-lasting performance. The 40/50mm sizing ensures a secure and accurate fit for a wide range of standard doors, making it suitable for both residential and commercial use. With smooth operation and strong resistance to tampering, this lock provides reliable everyday security.

Manufactured from durable, premium-grade materials, the High Security V10 Euro Cylinder is built to withstand daily use while maintaining excellent performance. The keyed-to-differ design means each lock has its own unique key, providing independent access control for multiple properties or units. Easy to install and engineered for dependable protection, this cylinder lock offers durability, practicality, and peace of mind in one compact design.