For detailed information, other images and documents, please select individual articles from the following table.
Roof construction screw
Case-hardened steel, special coating according to UEatc guidelines, TX drive. Fastening of roof rails and non-slip insulating materials on concrete > C 20/25, < C 35/45 (> B 25, < B 45)
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For use with conventional drivers
- Tested in accordance with DIN 50018 — 15 cycles Kesternich
- Tested according to DIN 50021 salt spray mist test
An impact screwdriver should be used for a screw-in depth of > 50 mm.
Warranty lodged with the ZVDH (Roofing Trade Association).
Attachment hardware length= roof structure + minimum screw-in depth
- Minimum screw-in depth in concrete: 30 mm
- Drilling dia.: 6 mm
1. Roof-waterproofing sheeting
2. Insulation material
3. Load-bearing structures (concrete)
| Screw-in depth | mm | Recommended tensile load with 5 times increased safety |
| Without rotary percussion | 30 | 0.56 kN |
| Without rotary percussion | 40 | 1.42 kN |
| Without rotary percussion | 50 | 1.55 kN |
| With rotary percussion | 30 | 0.53 kN |
| With rotary percussion | 40 | 1.23 kN |
| With rotary percussion | 50 | 1.49 kN |
Concrete
Select RAL-colour code
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