What size half euro cylinder do I need?

To determine the correct size, measure from the central screw fixing to each side of the door or lock case. Common configurations include 35/10mm and 40/10mm depending on your door thickness.

Euro Half Cylinder

Q: What is a Euro half cylinder lock?

A Euro profile cylinder that operates from only one side—either with a key or a thumb-turn—typically used on internal doors, garage shutters, or cupboard access panels.

Q: Are Euro half cylinders secure enough for internal use?

Yes. We offer Euro half cylinders across a range of security grades. Basic models are suitable for standard internal use, while high-security options include anti-snap, anti-drill, and anti-pick features with BS EN 1303 and TS007 ratings—making them appropriate for both internal and certain external doors.

Q: Can I install a Euro half cylinder myself?

Yes. Most cylinders are straightforward to replace: simply remove the fixing screw, slide out the old cylinder, insert the new one, and re-secure. If you're unsure of measurements or fitment, we recommend speaking to a professional or contacting our support team for guidance.

(49 products)

Explore the Versatile Euro Half Cylinder Locks

Discover our robust collection of Euro Half Cylinder locks—streamlined, secure single‑side solutions perfect for internal access points like cupboards, French doors, and control panels.

Definition, Use Cases & Benefits

A Euro Half Cylinder, also referred to as a half euro profile cylinder, provides key or thumb-turn access from one side only. Ideal for areas where restricted or one-way access is needed, such as storage cupboards, garage doors, shutters, or balcony doors. These cylinders are designed to fit standard Euro lock cases, offering a neat and secure finish in any application.

Pros & Cons

✓ Single‑side operation for enhanced control and simplicity
✓ Compatible with standard Euro profile locks for quick installation
✓ Available in satin chrome, antique brass, matt black, and polished brass
✓ Options with anti‑snap, anti‑drill, anti‑pick, BS EN 1303 and TS007 ratings
✗ Not suitable for two-way external/internal access applications
✗ Incorrect sizing may cause misalignment—always check measurements (e.g., 35/10 mm)

Sizing & Fit Recommendations

Measure from the centre of the fixing screw hole to the face of the door on each side (e.g., 35/10 mm). These cylinders are suitable for doors across residential, commercial, and industrial settings, and we offer UK-wide delivery—including London, Manchester, Birmingham, and all surrounding counties.

From The Anvil 5 Pin Single Cylinder Sku 45879

Comprehensive Security & Functional Excellence

Why Choose Our Euro Half Cylinder Locks

Euro half cylinders deliver refined, single-side locking capability, expertly crafted for internal contexts requiring minimal access. Featuring anti-snap, anti-pick, and anti-drill technologies, each cylinder meets stringent UK security standards like BS EN 1303 and TS007. They integrate seamlessly into Euro profile lock systems, making replacements and master key setups efficient.

Available in finishes such as satin chrome, antique brass, polished brass, and matt black, our cylinders accommodate diverse architectural styles—from modern minimalist interiors to heritage-focused installations. Whether you require replacements for shutter controls, keyed alternatives for commercial storage, or matching your existing handle finishes, each is suited to varied use-cases.

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Know More Before You Buy

Technical Insights on Euro Half Cylinders

When selecting a Euro half cylinder, understanding the finer technical points can make all the difference. These cylinders come in a range of formats — keyed only or with a thumb turn — and are typically used in areas where access is required from one side only, such as control panels, restricted storage, garage doors, or internal gates.

One critical factor is the cylinder length. Measurements like 35/10mm or 40/10mm refer to the distance from the central fixing hole to either end of the cylinder. Choosing the correct dimensions ensures the cylinder sits flush with the door hardware and escutcheon — both for aesthetics and security.

It’s also worth considering the level of key control you require. If you’re managing multiple access points, a keyed alike setup can offer convenience, while master key systems provide hierarchy-based access — ideal for commercial or managed properties.

Finally, pairing the cylinder with the correct hardware — like our Euro Profile Cylinder Pulls, Euro Profile Escutcheons, and Euro Profile Locks — enhances both function and finish.

For help with specifications, sizing, or lock compatibility, our team is here to assist. Contact us and we’ll walk you through everything you need.

Frequently Asked Questions

What is a Euro half cylinder lock?

A single-side access Euro profile cylinder—offering key or thumb-turn operation—best suited for internal access points like cupboards, balconies, or control panels.

How do I determine the correct size for a half euro cylinder?

Measure from the fixing screw centre to the door edge for the first figure, and from the centre to handleback for the second (e.g., 35/10 mm).

Are Euro half cylinders secure enough for internal use?

Yes. Euro half cylinders are commonly used for internal applications, but we offer models across a range of security levels. Some cylinders provide basic internal protection—ideal for storage cupboards or low-risk areas—while others are engineered with advanced features like anti-snap, anti-pick, and anti-drill protection. Many of our models meet or exceed BS EN 1303 and TS007 standards, making them suitable even for certain external or higher-security internal doors, depending on your needs.

What finishes are available for Euro half cylinders?

Choose from satin chrome, polished brass, antique brass, and matt black to suit any interior architectural style.

Can I install a euro half cylinder myself?

Yes. Simply remove the fixing screw, slide out the old cylinder, insert a correctly sized replacement, and secure. If unsure, seek professional help.

Our Security Expertise & UK‑Wide Delivery

Trusted for Over 40 Years Across the UK

With more than four decades of expertise supplying premium architectural ironmongery, our reputation is rooted in quality and trust. We partner with industry-leading brands such as From The Anvil, Carlisle Brass, Heritage Brass, and Frelan Hardware to bring you Euro half cylinder locks crafted to last.

Deliveries extend across London, Manchester, Birmingham, Glasgow, Cardiff, and beyond—making us a dependable UK-wide supplier for locksmiths, developers, and renovators alike. Whether you're installing new cupboards, retrofitting French doors, or upgrading master key systems, our cylinders offer high-grade UK specification and service that architects and specifiers rely on.