Screw 7520
- Type:
- Self-drilling
- Material:
- Bimetal
Stainless steel screw with carbon drill point - Insert:
-
For outdoor and indoor use with high humidity
For fastening trapezoidal sheets - Substructure:
- Steel profiles
- Length:
- 25 - 38 mm
- Steel thickness:
- 3 - 5 mm
- Screw head ⌀:
- 10.5 mm
- Thread diameter ⌀:
- 5.5 mm
Variants
| Length [mm] |
Sealing washer [mm] |
Insulation [mm] |
Article no. | price |
|---|---|---|---|---|
| 25 | 16 | 1 | 752055026E16K | €31.66 |
| 25 | 19 | 1 | 752055026E19K | €34.06 |
| 25 | 22 | 1 | 752055026E22K | €35.14 |
| 38 | 16 | 1 | 752055038E16K | €34.64 |
Product description
The 7520 screw is a self-tapping bi-metal drill screw with a hexagonal head, designed for fastening trapezoidal sheet metal to heavy-duty steel beams. With its stronger drill tip, it is designed for steel thicknesses of 3 to 5 mm and has been tested to drill up to 6 mm. This makes it the higher-performance hexagonal variant for more solid substructures.
Hexagonal bi-metal self-tapping screw A2
SW 8
Drill point No. 3
Sealing washer A2
for fixing profiled sheets to steel substructures
Drilling capacity ∑ ≤ 6.0 mm / – tested in accordance with approval: 3.0 – 5.0 mm –
Typical applications
The 7520 screw is used wherever profiled sheets need to be fastened to heavy-duty steel beams. Typical applications include:
- Fastening of trapezoidal sheets to heavier steel substructures
- Use on walls and roofs
- Outdoor applications and indoor areas with high humidity
- Support structures with beam thicknesses between 3 and 5 mm
The screw is designed as an A2 self-tapping bi-metal screw with a hexagonal head (SW 8) and No. 3 drill point, with an A2 sealing washer. It is available in lengths of 25 mm and 38 mm and is designed for steel thicknesses of 3 to 5 mm; its tested drilling capacity extends up to 6 mm. For roof applications, it is approved with and without a cap.
When should you choose this screw?
The 7520 screw is the right choice when a hexagon screw is required for heavy-duty steel beams with a thickness of 3 to 5 mm. For a very wide range of applications or thinner beams, the 7510 screw is the more versatile choice. If you prefer the UFO design with a flat underside, the 7110, 7120 or 7130 screws are suitable, depending on the beam thickness. You can find an overview of all screws in the ‘Screws’ category.
Matching products
The 7520 screw is used in conjunction with profiled sheets. Suitable products:
- Trapezoidal sheets for roofs and walls: Trapezoidal sheet range.
- Cap screws for roof applications where the screw is positioned in the high rib.
- Screw 7510 as a versatile hexagonal variant for a wider range of steel thicknesses: Screw 7510.
You can find an overview of all accessories in our accessories section.
Frequently asked questions
How does the 7520 screw differ from the 7510?
Both are hexagonal bi-metal screws for steel. The 7520 has a stronger drill tip and is designed for thick steel sections of 3 to 5 mm. The 7510 screw covers a wider range, from 0.63 to 7 mm, and offers more length and washer options.
What steel thickness is the screw suitable for?
The 7520 screw is intended for steel thicknesses of 3 to 5 mm; its tested drilling capacity extends up to 6 mm. It is therefore suitable for heavier-duty steel substructures.
In which lengths is the screw available?
The 7520 screw is available in lengths of 25 mm and 38 mm with a sealing washer. The correct choice depends on the sheet metal profile and the substructure. We’d be happy to advise you on this.
Do I need a cap on the roof?
On the roof, the screw is approved for use with or without a cap. A cap is used when the screw is positioned in the high rib to improve the bearing surface. We’d be happy to advise you on the appropriate design.
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