B-Harko H6 Euro Cylinder Lock 26/40mm 5-Disc Key Security Class 4 Black EN 1303

Product Overview

The B-Harko H6 Euro profile cylinder lock insert, 26/40 mm, is engineered for demanding environments requiring a high level of access security. Certified by the Building Research Institute (ITB) to PN: EN 1303:2015-07, it achieves durability class 6 (over 100,000 cycles), corrosion resistance class C (from -20°C to +80°C), and key security class 4, making it suitable for modern office, residential, and commercial doors. Its matte black finish offers a visually cohesive choice for contemporary architectural aesthetics.

What distinguishes this specific model is its 5-disc security mechanism paired with a key security class 4 rating, ensuring a minimum of 30,000 key combinations. This significantly reduces the risk of unauthorized key duplication and enhances property protection in multi-tenant or sensitive access settings. Highly recommended for property managers, security contractors, or door manufacturers specifying high-security master key systems for premium developments.

Key Features

• ITB certified to PN: EN 1303:2015-07 ? independently tested for quality and security


• Durability class 6 ? operational lifespan of at least 100,000 opening cycles


• Corrosion resistance class C ? operates reliably between -20°C and +80°C


• Key security class 4 ? minimum 30,000 key variations for high access control


• 5-disc locking mechanism ? added picking and manipulation resistance


• Torque resistance ? cylinder withstands at least 15 Nm twist force


• Matte black finish ? suits modern commercial and residential designs


• Includes 5 solid brass keys ? each 2.3 mm thick for wear resistance

Technical Specifications

• Certification: PN: EN 1303:2015-07


• Testing Institute: ITB (Instytut Techniki Budowlanej)


• Profile: Euro cylinder


• Cylinder Size: 26/40 mm


• Durability Class: 6 (?100,000 cycles)


• Corrosion Resistance: Class C (-20°C to +80°C)


• Key Security Class: 4 (?30,000 key combinations)


• Number of Discs: 5


• Torque Resistance: 15 Nm


• Key Material: Brass, 2.3 mm thick


• Finish: Matte black


• Keys Supplied: 5


• Accessories: Mounting screw

Applications

Applicable to internal and external doors in residential, commercial, and institutional buildings where high durability, key control, and resistance to environmental factors are critical. Ideal for secure offices, modern apartment complexes, managed multi-tenant properties, and new construction requiring compliance with EN 1303. Suitable for OEM door manufacturers, bulk security system upgrades, and high-traffic entryways.

Packaging & Shipping

Supplied in an aesthetic retail box including the cylinder insert, 5 solid brass keys, mounting screw, and maintenance and installation instructions. Declaration of conformity and test certificates included; bulk packaging available for OEM orders.