BS EN 12320 : 2001Building hardware – padlocks and padlock fittings
UNION products applicable: high security padlocks (section 3A)
GUIDE TO CLASSIFICATION
BS EN 12320 classifies padlocks and padlock fittings by using a 7 digit coding system.
Each digit refers to a particular feature of the product measured against the standard's performance requirements.
Digit 1 - Category of use
Digit 2 - Durability (no. of test cycles)
Digit 3 - Door mass
No requirementDigit 4 - Fire resistance
Digit 5 - Safety in use
Digit 6 - Corrosion resistance
Products are classified in accordance with EN1670:1998
- grade 1: internal applications- grade 3*: external applications
*The standard has been published containing an error. BSI is making arrangements to correct this.
Digit 7 - Security Requirements
There are 6 grades of security, where 6 is the highest and 1 is the lowest
Products are tested to the following criteria
The following marking denotes a padlock or padlock fitting which is suitable for use on internal or external applications and has a security grade 4:
Box 1 - 5 - No classification
Box 6: Corrosion grade 3
Box 7: Security grade 4
Only the classified requirements of BS EN 12320 are listed in UNION padlock product literature.
Published 25 Feb 2010
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