How Hex Head Self Drilling Screws Work in Solar Mounting Systems
Hex head self drilling screws (also known as TEK screws) are designed with a drill point that allows them to:
Drill
Tap
Fasten
-all in one operation.
Typical Structure:
Hex washer head (with EPDM washer optional)
Drill point (TEK #3 / #4 / #5)
Hardened carbon steel
Common Specifications:
Diameter: #10, #12, #14
Length: 19mm – 150mm+
Standard: DIN, IFI, customized
The Role of Helical Piles in Solar Foundations
Helical piles consist of:
Steel shaft
Helical plates
Hot-dip galvanized coating
They are screwed into the ground using hydraulic machines, providing immediate load-bearing capacity.
Key Engineering Benefits:
عالي load capacity
مقاومة عالية للرياح (wind resistance)
Suitable for temporary and permanent solar structures
⚙️ Complete Solar Mounting Fastening Solution
A typical system includes:
| Component | Function |
|---|---|
| Helical pile | Ground foundation |
| Steel bracket | Structural support |
| Solar rail | Panel support |
| Self drilling screw | Fastening connection |
| Bolts & nuts | Reinforcement |
💡 How to Choose the Right Fasteners for Solar Projects
When selecting screws and piles, consider:
1. Material Compatibility
Steel to steel → Self drilling screws
Aluminum to steel → Bi-metal screws recommended
2. Environment
Coastal → Ruspert or HDG
Desert → High temperature resistance
3. Thickness of Steel
TEK #3 → thin steel
TEK #5 → thick steel
Looking for a reliable supplier for solar mounting fasteners and foundation solutions?
We provide:
Full range of hex head self drilling screws
High-strength helical piles
Customized fastening solutions for solar EPC projects
Fast delivery & stable quality
👉 Contact us now for catalog & quotation
👉 Free samples available for testing
