For detailed information, other images and documents, please select individual articles from the following table.
Roof construction screw
Steel case hardened, special coating according to UEatc guidelines, hex 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
- Bore
: 6 mm
1. Roof sealing sheet
2. Insulation
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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