4.2x42mm Countersunk Phillips Twin Cut Self Drilling Cement Board Screws 200 Pk

These cement board screws are ideal for heavy-duty use providing a secure and lasting hold for your cement board installations. Specifically designed for fixing cement board to timber and thin sheet metal (max. 0.6mm) with a self countersinking head for a secure and flush finish. Exterior grade coating for superior corrosion resistance in damp or corrosive environments when compared to standard fasteners.