Half Cylinder Door Locks (Euro Profile) by Hettich

Overview

Hettich's half cylinder range is part of its Euro Profile Cylinder door locking solutions, designed for doors that need a single-side locking mechanism rather than a full double cylinder. These half cylinders are built with a brass core and a steel nickel-plated finish, offering corrosion resistance and durability for interior and exterior door applications.

What It Does

A half cylinder lock secures one side of a door using either a key or a thumb turn, depending on the model. It fits into standard Euro profile lock bodies and is selected based on the door's thickness and whether key access or thumb-turn access is needed on the exposed side.

Who It Helps

• Homeowners and builders fitting or replacing Euro profile locks on doors up to 40–45 mm thick
• Architects and interior designers specifying hardware for new door installations
• Hardware retailers and distributors sourcing branded locking components
• Facility managers upgrading door security with corrosion-resistant cylinders

Key Capabilities

• Brass core construction with steel nickel-plated finish for durability and corrosion resistance
• Available in thumb-turn (one side) and key-operated (one side) configurations
• Sized for doors with maximum thickness of 40 mm or 45 mm depending on model
• Stainless steel (SS) finish options on key-operated variants
• Key-operated models include 3 mechanical keys

Product Lineup

Buyer Questions This Page Should Answer

What is a half cylinder lock used for?

It locks one side of a door, typically where only one side needs key or thumb-turn access — common for doors where the other side is secured differently or doesn't require external access control.

What's the difference between HHTL 40 and HHCL 40/45?

HHTL 40 uses a thumb turn on one side instead of a key, making it suitable for quick interior locking without a key. HHCL 40 and HHCL 45 are key-operated with a stainless steel finish and come with 3 mechanical keys, differing mainly in maximum door thickness (40 mm vs 45 mm).

How do I choose the right size?

What materials are these locks made of?

All models feature a brass core with a steel nickel-plated finish, built for durability and resistance against corrosion.

Are these locks currently available?

How many keys come with a key-operated half cylinder?

Key-operated models (HHCL 40 and HHCL 45) include 3 mechanical keys.

Proof or Trust Signals

• Branded Hettich hardware with defined SKUs for each model
• Precision-crafted brass core construction stated for all listed half cylinders
• Steel nickel-plated and stainless steel finish options for corrosion resistance

Resources or Next Steps

• Shop Half Cylinder Door Locks at Hettich India