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BS EN 1303:2012

BS EN 1303:2012 – Cylinders for locks

BS EN 1303:2012 – Cylinders for locks

 

BS EN 1303:2012 classifies cylinders for locks using an 8-digit coding system. A broadly similar classification system is used for other building hardware product standards. Each digit refers to a particular feature of the product measured against the standard's performance requirements.

 

Digit 1 – Category of use
One category is identified:
Grade1: For use by people with a high incentive to exercise care and with a small chance of misuse.

 

Digit 2 – Durability
Three grades are identified according to the number of test cycles achieved:
Grade 4: 25,000 cycles
Grade 5: 50,000 cycles
Grade 6: 100,000 cycles

 

Digit 3 – Door mass
One grade is identified:
Grade 0: no requirement

 

Digit 4 – Fire resistance
Three grades are identified as follows:
Grade 0: Not approved for use on fire resistant / smoke control door assemblies
Grade A: Suitable for use on smoke control door assemblies
Grade B: Suitable for use on fire resistant and smoke control door assemblies

 

Digit 5 – Safety
One grade is identified:
Grade 0: no requirements

 

Digit 6 – Corrosion and temperature resistance
Four grades are identified as follows:
Grade 0: No corrosion requirement, no temperature requirement
Grade A: High corrosion resistance, no temperature requirement
Grade B: No corrosion requirement, temperature requirement from - 25°C to + 65°C
Grade C: High corrosion resistance, temperature requirement from - 25°C to + 65°C


Note:
No distinction is made between the inside and the outside of either the cylinder and/or the door. On completion of the test, the cylinder must operate using a maximum 1.5 Nm torque on the key.

 

Digit 7 – Key related security
Six grades are identified and the principal requirements are summarised below:

  Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6
Minimum number of effective differs 100 300 15,000 30,000 30,000 100,000
Minimum number of movable levers, pins, discs, etc. 2 3 5 5 6 6
Coding on key could disclose combination Yes Yes No No No No
Torque resistance pf plug 2.5 Nm 5 Nm 15 Nm 15 Nm 15 Nm 15 Nm

 

 

Digit 8 – Attack resistance
Five grades are identified and the principal requirements are summarised below:
Grade 0: No resistance against drilling, no resistance against mechanical attack
Grade A: 3/5 minute resistance against drilling; resistance against mechanical attack except plug / cylinder extraction
Grade B: 5/10 minute resistance against drilling; resistance against mechanical attack except plug / cylinder extraction
Grade C: 3/5 minute resistance against drilling; resistance against mechanical attack
Grade D: 5/10 minute resistance against drilling; resistance against mechanical attack

 

 

Sources:
Door and Hardware Federation (DHF) Best Practise Guide – Cylinder for locks to BS EN 1303