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.
