This article explains common Euro cylinder configurations and where they are typically used. It also covers pin counts, compatibility with deadbolts, and questions to ask when selecting a cylinder for a new install or replacement.
Euro Cylinder Types and Use Cases
Double-Key Euro Cylinder (code: 4092)
- Keys on both sides.
- Suitable for security doors and controlled access where locking and unlocking is needed from inside and outside.
- Pin count: 5-pin.
Half Cylinder (code: 4093)
- Key on the outside only.
- Ideal for roller doors and utility enclosures where internal access does not require a key.
- Pin count: 6-pin.
Key and Turn Knob Cylinder (code: 4091)
- Key to the outside; thumb turn to the inside.
- Useful where a quick, keyless exit is needed from the inside.
- Pin count: 4-pin.
Slam Lock Compatibility
Euro cylinders are used with slam locks and related lock bodies.
- Note: Euro cylinders are supplied without lock bodies. Check the product listing for required companion parts.
Keying Options
- Cylinders can be made keyed alike on request.
- Not all items are supplied keyed alike by default. Confirm before ordering if keyed alike sets are required.
Selection Questions to Clarify Requirements
Use these questions to guide product choice:
- Does the cylinder need a key on both sides?
- Do users need a quick exit from the inside (thumb turn)?
- Is this a replacement or a new installation?
