Best Anti-Snap Cylinders in the UK: Top Security Picks

Best Anti-Snap Cylinders in the UK: Top Security Picks

An anti snap cylinder is an essential upgrade for many UK homes and commercial properties. Cylinder snapping remains a common method used by burglars to bypass euro cylinder locks on uPVC, composite and timber doors. Choosing a high-quality anti-snap cylinder reduces that risk, helps meet insurer requirements and gives both homeowners and tradespeople a reliable product to specify or fit.

What an anti snap cylinder does and why it is important

Cylinder snapping is a mechanical attack where an intruder breaks the exposed part of a standard euro cylinder to unlock the door. Anti snap cylinders are engineered to resist this. Typical security features include:

• Sacrificial section or break line: a deliberately weaker external portion breaks away while leaving internal locking components intact
• Anti-bump and anti-pick measures: pin designs and protected keyways make manipulation much harder
• Anti-drill protection: hardened steel pins or plates protect the core from drilling
• TS007 3-star rating and other standards: insurers in the UK commonly require a TS007 3-star rated cylinder for exterior doors; look for this marking when specifying

Fitting an approved anti snap cylinder is one of the most cost-effective ways to improve door security without replacing the entire lock case.

Top anti snap cylinder picks for different needs

Below are widely recommended types and models to consider. For each, check the specific dimensions, key control options and whether the cylinder comes with a guarantee or restricted key system.

• Ultion 3-Star TS007: a premium euro cylinder often praised for robust anti-snap performance and internal locking mechanisms that secure the cam if attacked. Popular with homeowners and locksmiths for its combination of security and key control options.
• Yale 3-Star TS007 cylinders: a cost-effective, widely available option that meets insurance expectations; suitable for volume specifications and replacements on uPVC and composite doors.
• Abloy Protec2: a high-end disc detainer system rather than a traditional pin cylinder; extremely resistant to picking and drilling. Suitable for customers wanting premium protection and restricted-key solutions.
• Abus / ERA 3-Star cylinders: mid-market choices with good anti-drill and anti-bump properties; suited for social housing, landlords and trade fitting where quality plus value are required.
• Key-restricted cylinders

How to choose the right anti snap cylinder: practical trade advice

When selecting an anti snap cylinder for a job, consider these factors:

• Correct size: measure from the centre of the fixing screw to each end of the cylinder. Common sizes are shown as 35/35 (70mm) or 40/35 (75mm). Always measure both sides with the cylinder installed; doors are not always symmetrical.
• Protrusion: ensure the cylinder does not stick out beyond the door face by more than a few millimetres. Excessive protrusion leaves the cylinder vulnerable to attack.
• Thumbturn or keyed on both sides: decide if a thumbturn is needed inside; be aware thumbturns can introduce vulnerabilities in some communal or multi-occupancy situations.
• Insurance and specification: many insurers require TS007 3-star cylinders on external doors. For commercial projects, check the specification or client requirement for Sold Secure or equivalent certification.
• Keying options: keyed alike, keyed to differ, and masterkey systems; consider restricted key systems if key control is a priority.

DIY replacement: step-by-step practical guidance

Replacing a euro cylinder is a straightforward job for a competent DIYer; tradespeople will find the task routine. Tools needed: screwdriver, tape measure, new cylinder, and the existing key. Typical steps:

• Remove handle and trim: undo the handle grub screws or through-bolts, and remove any trim plates so you can access the cylinder fixing screw.
• Unscrew the retaining screw: centre of the door edge; this secures the cylinder in place.
• Insert the key and turn slightly to align the cam: this allows the cylinder to slide out. If the cylinder is snapped, turn the remaining fragment to release what you can and call a locksmith if it is jammed.
• Withdraw the old cylinder, measure its overall and split sizes, and compare with the new cylinder before fitting.
• Slide in the new anti snap cylinder with the key inserted and turned to align the cam; replace the retaining screw and re-fit handles and trim.
• Test operation: lock and unlock from both sides to ensure smooth operation; check multi-point engagement and that no part protrudes unnecessarily.

If a cylinder has been snapped or the door shows signs of forced entry, secure the property first and consider contacting the police and a qualified locksmith for emergency replacement.

Maintenance and trade best practice

Maintain cylinders to ensure longevity and security:

• Lubricate annually with a dry graphite or PTFE spray; avoid oil-based lubricants that attract dust and gum up the mechanism.
• Torque and fixings: ensure the retaining screw is correctly tightened; loose fixings can allow movement and contribute to failure.
• Record key codes and keep documentation: for restricted systems, maintain copies of key cards and order records to control duplication.
• Advise customers about door alignment: poor door alignment or loose handles can place uneven stress on cylinders and multipoint locks.

Recommended Products

Based on this article, you may find these products helpful:

• TL Thumb Turn Euro Cylinder
• Ultion Plus TS007 3* Kitemarked Euro Key & Turn Cylinder
• Multipoint Gearbox GU Old Style
• In-Line Window Mechanism
• Offset Window Mechanism

Conclusion and next steps

Choosing the right anti snap cylinder is a balance between security, budget and key control. For most homeowner and landlord applications a TS007 3-star anti snap cylinder from a reputable brand will meet insurer requirements and greatly reduce the risk of cylinder snapping. For higher-spec jobs consider premium disc detainer systems or restricted key cylinders.

Next steps: check your current cylinder size and insurance requirements, visit our pillar page for further technical detail at /guides/euro-cylinders, and contact Window Hardware Store for trade pricing, supply and fitting options if you need professional assistance.