Half Cylinders

An image of a garage door using a half cylinder

Quality locks from brands you can trust.

Half euro cylinder locks can be found on garage, fire, and stockroom doors that lock from one side only. Half cylinders are key-operated on one end, with a blank 5mm end after the cam space.

Key Features

  • a close up of a key being used in a cylinder

    Good key security

    6-pins with 30,000 key differs

  • an icon of a clock

    Quick and easy fitting

    Replace existing cylinders within 5 minutes

  • an icon of a shield

    Good key security

    6-pins with 30,000 key differs

  • 3 cylinder keys side by side

    Extra key option

    3 keys as standard, more available

1 4
a BSI icon with the 1 star rating above it

This certification ensures that a lock meets specific criteria for security, durability, and resistance to various forms of attack, such as drilling, picking, and bumping. The standard evaluates aspects like key-related security, durability (measured in cycles of use), and resistance to corrosion and temperature changes. A half-cylinder lock certified under BS EN 1303:2005 has been tested to these rigorous standards, making it a reliable choice for secure locking systems.

1 product

FAQ

What is a Euro Cylinder?

A Euro Cylinder is a type of lock commonly used in doors, characterized by its standardized shape and design, allowing for easy replacement and compatibility across different hardware.

How do I measure a Euro Cylinder for replacement?

To measure a Euro Cylinder, remove the existing cylinder and measure its length from the center screw hole to each end, providing two measurements (e.g. 40/50mm). You can view our installation guide here, and our correction guide for protruding cylinders here

What is anti-snap protection in Euro Cylinders?

Anti-snap protection refers to design features in Euro Cylinders that prevent intruders from easily snapping the lock to gain entry, enhancing security.

Can I install a Euro Cylinder myself?

Yes, installing a Euro Cylinder is generally straightforward and can be done with basic tools; however, if unsure, consulting a professional is advisable. You can also watch our installation guide here

Are all Euro Cylinders the same size?

No, Euro Cylinders come in various sizes. It's essential to measure your existing cylinder accurately to ensure a proper fit.

What is the difference between single, double, and thumb-turn Euro Cylinders?

Single cylinders operate from one side only, double cylinders can be operated from both sides with a key, and thumb-turn cylinders have a key operation on one side and a thumb-turn on the other for convenient locking and unlocking.

How often should I replace my Euro Cylinder?

It's recommended to replace your Euro Cylinder if it's damaged, outdated, or lacks modern security features like anti-snap protection.

Can Euro Cylinders be keyed alike?

Yes, multiple Euro Cylinders can be configured to use the same key, offering convenience for properties with multiple doors. You can view our keyed alike service here

Do Euro Cylinders come with a warranty?

Warranty terms vary by manufacturer and supplier. It's advisable to check the warranty details at the time of purchase. These can be found on the description and/or the specifications tab