Smiths Locks 3* Star Euro Thumbturn CylinderSmiths Locks 3* Star Euro Thumbturn Cylinder 37×37

Smiths Locks 3* Star Euro Thumbturn CylinderSmiths Locks 3* Star Euro Thumbturn Cylinder 37×37

Smiths Locks 3 Star Euro Thumbturn Cylinder – 37 x 37mm

The Smiths Locks 3 Star Euro Thumbturn Cylinder (37x37mm) represents the highest standard in modern mechanical door security. Specifically engineered for maximum resistance to physical and covert attack, this high-security Euro cylinder is ideal for both residential and light commercial applications. With a compact symmetrical design, it offers seamless integration into doors where safety, keyless internal access, and rigorous compliance with British and European security standards are essential.

Whether used to upgrade an existing lock or specified for a new-build or refurbishment project, this 3 Star Kitemarked cylinder provides advanced protection, enduring performance, and user-friendly functionality. It is particularly suited for front entrance doors, multi-occupancy buildings, and locations where keyless exit is a safety or accessibility requirement.

Key Security Features

TS007 3 Star Kitemark Certification

This cylinder has been independently tested and awarded the highest possible rating under the TS007 standard. A 3 Star Kitemark signifies full protection against all known forced and covert methods of cylinder attack, including snapping, drilling, picking, bumping, and plug extraction.

PAS24 Compliant

Certified to PAS24 Enhanced Security Performance, this lock meets the legal and security requirements for door sets in new-build homes and major renovations. It is a preferred choice for developers, contractors, and security-conscious homeowners.

Secured by Design (SBD) Police Preferred Specification

Endorsed by the UK Police’s official crime prevention initiative, this product has passed stringent third-party testing and is recognized for its effectiveness in reducing burglary risks. Secured by Design products are proven to deter opportunistic criminals and raise the standard of home security.

Advanced Anti-Attack Technologies

This cylinder includes multiple integrated mechanisms to defend against sophisticated and forced attacks:

• Snap-Safe Design: Built with sacrificial sections that break away in a controlled manner under force, this feature prevents access to the lock mechanism even if the front of the cylinder is broken or removed. This makes it highly effective in combatting lock-snapping—a common technique used in burglaries.

• Anti-Pick Pins: Precision components and internal mechanisms prevent unauthorized access via lock-picking tools. These pins make it extremely difficult for intruders to manipulate the cylinder manually.

• Anti-Drill Reinforcement: Hardened steel inserts protect the internal structure of the cylinder from power drill attacks, one of the most aggressive forms of forced entry.

• Anti-Bump Resistance: Specially designed pins and spring mechanisms prevent the success of bump keys, which are often used to silently and quickly defeat conventional cylinder locks.

• Anti-Plug Pulling Protection: Structural enhancements within the lock prevent intruders from forcibly extracting the lock plug from the housing, even when using specialized tools.

Functional and Build Highlights

• Thumbturn Operation (Keyless Internal Control):
  The integrated thumbturn on the internal side of the lock allows the door to be easily locked or unlocked without a key. This is particularly useful for:

  • Quick egress in emergencies

  • Elderly or disabled users who may struggle with traditional keys

  • Environments where internal security is needed without locking in occupants

• 6 Precision-Cut Pins:
  The lock contains six high-security pins, offering thousands of possible key combinations. This dramatically reduces the chances of key duplication or manipulation.

• Nickel-Plated Finish:
  Provides a sleek, corrosion-resistant coating that withstands both external weathering and internal wear. The finish ensures that the cylinder maintains both function and aesthetic over time.

• 3 Factory-Cut Keys Supplied:
  Each cylinder comes with three high-quality keys, allowing flexibility for homeowners, tenants, or shared access scenarios. Additional keys can be professionally cut as needed.

• 10-Year Manufacturer Guarantee:
  Smiths Locks offers a full decade of warranty coverage, highlighting the long-term reliability and durability of this cylinder under normal usage.

Technical Specifications

• Cylinder Type: Euro Profile with Internal Thumbturn

• Size: 37mm (external) x 37mm (internal)

• Security Rating: TS007 3 Star Kitemarked

• Standards Compliance: PAS24 Certified

• Police Approval: Secured by Design (SBD) Endorsed

• Material Finish: Nickel-Plated

• Number of Pins: 6

• Keys Supplied: 3

• Boxed Weight: 290g

• Guarantee: 10 Years

Recommended Applications

This product is ideal for a wide range of applications, including:

• Main entrance doors (residential or apartments)

• Multi-occupancy dwellings (HMOs, flats)

• Timber, uPVC, and composite door installations

• Fire-rated doors requiring internal egress

• Doors in homes occupied by elderly or disabled individuals

• Insurance-compliant and police-recommended upgrades

Frequently Asked Questions (FAQs)

Q: What is the difference between a standard Euro cylinder and this 3 Star model?
A: The 3 Star Euro cylinder includes multiple layers of physical security, such as snap resistance, drill protection, and anti-bump/pick measures. It is certified to TS007 3 Star level, whereas many standard Euro cylinders do not meet this benchmark and may be vulnerable to attack.

Q: Can I install this cylinder myself?
A: Yes, if you are comfortable with basic door hardware replacement. The installation process involves loosening the securing screw, aligning the cam, and replacing the cylinder. However, for optimal security and fit, professional installation is recommended.

Q: Does this lock meet insurance requirements?
A: Yes. Locks with TS007 3 Star certification and PAS24 compliance are widely accepted by UK home insurance providers and often recommended in policies.

Q: Can I get additional keys for this lock?
A: Absolutely. The lock includes three keys, but additional copies can be made by any professional locksmith using the existing key.

Q: Is this cylinder suitable for external doors?
A: Yes. Its anti-corrosion nickel finish, durable construction, and full security certifications make it ideal for external front and rear doors.

Q: Is it compatible with my door?
A: This lock fits all standard Euro-profile lock cases and is compatible with the vast majority of composite, timber, and uPVC doors.

Conclusion

The Smiths Locks 3 Star Euro Thumbturn Cylinder (37 x 37mm) is a premier choice for anyone looking to significantly improve the security of their property. With police-backed approval, top-tier testing certifications, and comprehensive attack resistance features, this lock offers outstanding protection and long-term value. The internal thumbturn adds convenience and safety, making it especially suitable for residential homes, rental properties, and multi-occupancy buildings. Backed by a 10-year guarantee, it is a trusted solution built to endure and defend.