Carbon Steel Countersunk Timber to Heavy Section
For fixing timber to hot rolled purlins (4.0mm – 12.5mm steel).
| Part Number | Length (MM) | Diameter (MM) | Drill Point | Min Timber Thickness (MM) | Max Timber Thickness (MM) |
|---|---|---|---|---|---|
| 60.5T | 60 | 5.5 | No. 5 | 6 | 25 |
| 80.5T | 80 | 5.5 | No. 5 | 25 | 45 |
| 100.5T | 100 | 5.5 | No. 5 | 40 | 60 |
| 120.5T | 120 | 5.5 | No. 5 | 45 | 85 |
| 150.5T | 150 | 5.5 | No. 5 | 50 | 115 |
| 175.5T | 175 | 5.5 | No. 5 | 60 | 145 |
| 200.5T | 200 | 5.5 | No. 5 | 80 | 165 |
Timber screws fasten timber to cold rolled purlins (1.5mm – 5.0mm steel).
- Carbon steel is the most popular material for fixings as it is strong, weather resistant and affordable.
- Countersunk heads lie flush with the profile, and require T-25 bits.
- The fine thread provides many points of engagement with the purlin, maximising pull-out values.
- The wings bore through the timber and keep the thread clean, before snapping off when they connect with the steelwork.
- The no. 5 drill point is designed to ensure a clean cut through up to 12.5mm steel, without burn-out.
For maximum fastener performance, we recommend using a tek screw driver which does not exceed 2500RPM.
| 60.5T | 80.5T | 100.5T | 120.5T | 150.5T | 175.5T | 200.5T | |
|---|---|---|---|---|---|---|---|
| A (mm) | 12.45 | 12.45 | 12.45 | 12.45 | 12.45 | 12.45 | 12.45 |
| B (mm) | 60.00 | 80.00 | 100.00 | 120.00 | 150.00 | 175.00 | 200.00 |
| C (mm) | 42.00 | 62.00 | 70.00 | 91.00 | 95.00 | 95.00 | 95.00 |
| D (mm) | 5.50 | 5.50 | 5.50 | 5.50 | 5.50 | 5.50 | 5.50 |
| E (mm) | 14.50 | 14.50 | 14.50 | 14.50 | 14.50 | 14.50 | 14.50 |
| F (mm) | 4.97 | 4.97 | 4.97 | 4.97 | 4.97 | 4.97 | 4.97 |
| 60.5T ⭳ | 80.5T ⭳ | 100.5T ⭳ | 120.5T ⭳ | 150.5T ⭳ | 175.5T ⭳ | 200.5T ⭳ | |
|---|---|---|---|---|---|---|---|
| Pull Out (kN) - 4.00mm S275 Steel | 7.94 | 7.94 | 7.94 | 7.94 | 7.94 | 7.94 | 7.94 |
| Pull Out (kN) - 6.00mm S275 Steel | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 |
| Pull Out (kN) - 8.00mm S275 Steel | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 |
| Pull Out (kN) - 10.00mm S275 Steel | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 |
| Pull Out (kN) - 12.00mm S275 Steel | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 | 9.50 |
| Shear (kN) | 7.30 | 7.30 | 7.30 | 7.30 | 7.30 | 7.30 | 7.30 |
| Tensile (kN) | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 | 16.00 |
