Timco - Cement Board Screw TWINCUT EXT 4.2 x 42 - Box - 200 - 217796

Specifically designed for fixing cement board to timber and thin sheet metal (max. 0.6mm). Self countersinking head for a secure and flush finish. Twin-cut point with a hi-low thread. Exterior grade coating for superior corrosion resistance in damp or corrosive environments, when compared to standard fasteners. Organic plating withstands 1,500 hours in salt spray test Fixing to timber and thin sheet metal (max. 0.6mm) Twin-cut for rapid pick-up and reduce torque Ribs under the head for improved countersinking