Description
Our Hex Flange Head Self-Drilling Screws, commonly known as Tek Screws, are designed to provide a fast and secure fastening solution without the need for pre-drilling. Featuring a sharp self-drilling point that acts like a drill bit, these screws can penetrate metal, steel, and aluminum in seconds. The integrated flange head acts as a built-in washer, distributing clamping force and sealing against water intrusion.
Technical Specifications:
- Head Type: Hex Flange / Hex Washer Head
- Drive Type: External Hex (Hexagon)
- Thread Type: Self-Drilling (Tek Point)
- Standards: DIN 7504 / GB/T 15856.4
Coating & Corrosion Resistance Guide
Choosing the right coating is vital for longevity. We offer various treatments to meet different environmental demands:
| Coating Type | Salt Spray Test (Hours) | Best Application Scenario |
|---|---|---|
| Ruspert (Silver/Blue) | 500 – 1000 hrs | Coastal areas, high humidity, outdoor structures |
| Dacromet (Zinc Flake) | 300 – 500 hrs | Automotive parts, heavy industry, high temperature |
| Zinc Plated (White/Yellow) | 24 – 48 hrs | Indoor dry environments, general hardware |
| Mechanical Galvanized | 200 – 300 hrs | Construction sites, mild outdoor exposure |
Point Type Selection (Tek Point Guide)
Select the correct point based on the steel thickness you need to penetrate:
| Point Code | Point Diameter | Max Drilling Thickness | Recommended Use |
|---|---|---|---|
| Tek #3 | 5.5mm | Up to 6mm Steel | Thin gauge metal roofing, purlins |
| Tek #4 | 6.3mm | Up to 12mm Steel | Structural steel, thick channels, solar mounts |
| Tek #5 | 6.3mm | Up to 16mm Steel | Heavy-duty steel frames, thick brackets |
