Polycarbonate Roof Fastening System
Head Type：Hex Washer Head
Material Options：Carbon steel /Stainless steel（304/316）
Finish / Coating：C8 Coating /Class 4/Dacromet/Ruspert/Zinc
Applications：
- Fixing polycarbonate roofing and wall cladding sheets to steel or timber purlins
- Ideal for translucent roofing systems where controlled compression is required
- Allows for thermal expansion and contraction without cracking the sheet
- Suitable for outdoor applications requiring weatherproof sealing and long-term stability
Polycarbonate roofing screws are specifically designed to provide secure, crack-free fastening while protecting the integrity and service life of polycarbonate panels.
| Size | Length (inch) | Length (mm) | Dia (mm) | Drill Tail |
| SDM 12–14 × 50 | 2″ | 50 | 5.8 | #2 |
| SDM 12–14 × 55 | 2-3/16″ | 55 | 5.8 | #2 |
| SDM 14–14 × 65 | 2-1/2″ | 65 | 5.8 | #2 |
| SDM 14–14 × 75 | 3″ | 75 | 5.8 | #2 |