Stainless Steel Csk Self Drill Screws – for Steel 4.0 – 12.5mm
- A2-304 Stainless Steel bi-metal countersunk head screws
- For fixing timber to steel 4.0 – 12.5mm thick
- Reamer wings to prevent timber jacking
Bi-metal screws have a carbon steel point fusion-welded to the stainless steel screw for effective drilling and tapping into steel combined with ultimate corrosion protection. Ideal for use in pestigious projects and other situations requiring to be maintenance free and where corrosion is not an option.
These screws use reamer wings to drill a clearance hole in the timber to prevent it from jacking off the steel. For screws into these steel thicknesses a Tek Screwdriver giving 1500 – 2500rpm should be used to ensure adequate drilling speed and driving torque.