Gezu Impex Walcur Spengler Screw - Grey
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Product Information
Full details
The Gezu Impex Walcur Spengler Screw is an essential hardware solution for roofing and outdoor construction projects, specifically designed for professionals and DIY enthusiasts needing a reliable, watertight fastening system. These screws provide superior protection against moisture and debris thanks to an integrated EPDM sealing washer, though users should ensure they are using the correct TX20 driver to avoid striping the screw head during installation.
All features
| Colour | Grey |
|---|---|
| Brand | Gezu Impex |
Extended Product Information
FAQs
What is the size of these screws?
These screws are 4.5 mm in diameter and 45 mm in length.
Do I need to pre-drill before using these screws?
Generally, the 4-cut nip and self-tapping thread allow for direct driving into most woods, but pre-drilling is recommended for hard woods or near board edges.
What type of screwdriver bit do I need?
These screws require a TX20 (Torx) screwdriver bit.
Can these be used for roofing?
Yes, they are specifically designed as spengler screws for roofing and exterior cladding applications.
How many screws come in a pack?
Each pack contains 100 screws.
What material is the washer made of?
The washer is made of EPDM, a durable synthetic rubber resistant to weathering and moisture.
Troubleshooting
Screw is difficult to drive into hardwoods
Although the screw is self-tapping, dense hardwoods require a pilot hole approximately 70-80% of the screw shank diameter.
EPDM washer is cracking or bulging
This indicates over-tightening. Reduce the torque on your drill or stop driving immediately once the seal makes contact.
The screw head strips during installation
Ensure your TX20 bit is not worn and that you are maintaining downward pressure while driving at a consistent, moderate speed.
Pros and Cons
Pros
- Superior watertight sealing performance
- Reduces wood splitting with 4-cut technology
- Polished, professional aesthetic finish
- Standardized 4.5mm x 45mm size for versatile use
- Self-tapping capability saves labor time
Cons
- Requires specific TX20 drive tool
- Not suitable for heavy-duty metal-to-metal framing
- Fixed length of 45mm limits some deep-fastening applications
Setup, Compatibility & Care
For optimal results, ensure the timber substructure is free of significant rot or damage. While the screw is self-tapping, you may still choose to pre-drill if working near the edge of a board to further guarantee against splitting. Use a high-quality TX20 bit to ensure a snug fit; a worn bit can damage the screw head. Do not overtighten; stop as soon as the EPDM washer shows a slight uniform compression against the surface to maintain the integrity of the seal. Store in a dry, temperature-controlled environment to keep the EPDM rubber gaskets supple and effective for future projects.