makes them recognisable as such – and thus as the fulfilment of a promise of quality to everyone who uses our handles.
DIN EN 13126-3 and DIN 18267
The European DIN EN 13126 standard deals with the hardware for windows and door-high windows. Part 3 of this series of standards defines the requirements and test methods for handles, in particular for tilt-and-turn , tilt-first and turn-only hardware. The dimensional specifications are defined in DIN 18267.
DIN EN 13126-3 for Window Handles
The European standard DIN EN 13126 comprises 19 parts relating to hardware for windows and door height windows. Part 3 has been fully revised (April 2023 edition) and uses a 8-digit classification key to define requirements and testing procedures for handles, particularly Tilt and Turn, Tilt-First and Turn-Only hardware.
The details regarding the classification key, which has been harmonised for all sections of the standard, follow below.
The European standard DIN EN 13126 does not stipulate any requirements in terms of window handle dimensions. These requirements are defined in DIN 18267 (e.g., square spindle 7 mm, screw fixing distance 43 mm).
The Classification Key in EN 13126-3:2023-04
The following example describes a window handle according to RAL that complies with the minimum requirements of EN 13126-3.
1st digit: Durability
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description |
| H1/90 | 5.000 turn cycles |
| H2/90 | 10.000 turn cycles |
| H3/90 | 20.000 turn cycles |
| H1/180 | 5.000 turn cycles |
| H2/180 | 10.000 turn cycles |
| H3/180 | 20.000 turn cycles |
2nd digit: Mass
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description |
| 0 | No requirement |
3rd digit: Corrosion resistance
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description |
| 2 | At least class 2 of EN 1670 |
4th digit: Test size
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description |
| 0 | No requirement |
5th digit: Security against burglar attack
(according to additional test parameters)
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description |
| 0 | Without protective effect |
| 1 | 35 Nm Resistance to twisting-off and forcing-off |
| 2 | 100 Nm* Resistance to twisting-off and forcing-off |
| 3 | 200 Nm** Resistance to twisting-off and forcing-off |
* Alternatively, ≥ 40 Nm with predetermined breaking point with full blocking function
** Alternatively, ≥ 50 Nm with predetermined breaking point with full blocking function
6th digit: Key-related security
(according to additional test parameters)
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description |
| 0 | No locking mechanism |
| 1 | Non-key-operated locking mechanism |
| 2 | Key-operated locking mechanism with ≥ 25 locking options |
| 3 | Key-operated locking mechanism with ≥ 100 locking options |
7th digit: Handle type
(type of operating handle)
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Application | Handle type |
| N1 | N = Non-key | 1 = Window handle |
| N2 | N = Non-key | 2 = Geared handle |
| C1 | C = Non-key-operated locking mechanism | 1 = Window handle |
| C2 | C = Non-key-operated locking mechanism | 2 = Geared handle |
8th digit: Category of use
(according to additional test parameters)
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 2 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 0 | 0 | C1 | 2 |
| Grade | Description | ||
| 1 | Between-clicks torque before and after durability test | Between-clicks torque Click-out torque Differential value | M0 ≤ 1,4 Nm Ma ≤ 6,0 Nm Md ≥ 0,4 Nm |
| Free play perpendicular and parallel to the mounting plane | Δ ≤ 6 mm | ||
| Torsional strength 200 N/85 mm/30 s | Admissible deformation Δ ≤ 5 mm | ||
| Tensile strength of spindle connection | F ≥ 100 N | ||
| Tensile strength - eccentric | F = 600 N | ||
| 2 | Between-clicks torque before and after durability test | Between-clicks Click-out torque Differential value | M0 ≤ 0,8 Nm Ma ≤ 4,0 Nm Md ≥ 0,8 Nm |
| Free play perpendicular and parallel to the mounting plane | Δ ≤ 4 mm | ||
| Torsional strength 200 N/85 mm/30 s | Admissible deformation Δ ≤ 2 mm | ||
| Tensile strength of spindle connection | F ≥ 100 N | ||
| Tensile strength - eccentric | F = 1.200 N | ||
Example classification key for a window handle with SecuForte
| 1 Durability | 2 Mass | 3 Corrosion resistance | 4 Test size |
| H2/180 | 0 | 3 | 0 |
| 5 Security against burglar attack | 6 Key-related security | 7 Handle type | 8 Category of use |
| 1 | 1 | C1 | 2 |
| Digit | Grade | Description | ||
| 1 | H2/180 | 10.000 Tilt-and-turn cylcles | ||
| 2 | 0 | No requirement | ||
| 3 | 3 | At least grade 2 of EN 1670 | ||
| 4 | 0 | No requirement | ||
| 5 | 1 | 35 Nm Resistance against twisting-off and forcing-off | ||
| 6 | 1 | Non-key-operated locking mechanism | ||
| 7 | C1 | Application C = Clickable, handle design 1 = Window handle | ||
| 8 | 2 | Between-clicks torque before and after durability test | Between-clicks Click-out torque Differential value | M0 ≤ 0,8 Nm Ma ≤ 4,0 Nm Md ≥ 0,8 Nm |
| Free play perpendicular and parallel to the mounting plane | Δ ≤ 4 mm | |||
| Torsional strength 200 N/85 mm/30 s | Admissible deformation Δ ≤ 2 mm | |||
| Tensile strength of spindle connection | F ≥ 100 N | |||
| Tensile strength - eccentric | F = 1.200 N | |||
