The closure security according to DIN EN 1303 (7th class) specifies how resistant a locking cylinder is according to six different points, including the minimum number of moveable tumblers, the minimum number of effective dissimilarities and the relocking security is tested and classified.
Classification is made in classes 1 to 6 of the seventh digit of the eight-digit coding scheme of classification according to EN 1303.
DIN EN 1303
- 1. point - use class (1 class possible)
- 2. point - durability (3 classes possible)
- 3. point - door dimensions (no classification)
- 4. point - fire resistance (2 classes possible)
- 5. point - operational safety (1 class possible)
- 6. point - corrosion resistance and temperature (4 classes possible)
- 7. point - locking security (6 classes possible)
- 8. point - attack resistance (3 classes possible)
The cylinders are classified in classes 1 to 6. Testing is carried out by an accredited testing institute.
consists of a combination of several requirements
- V min. no. = minimum number of effective dissimilarities
- Z min. no. = minimum number of movable tumblers
- gl. steps max. no. = same-depth steps maximum number
- gl. steps nb. = steps of equal depth next to each other