4.2 x 42mm Drywall Cement Board Screws Self Drilling Wafer Countersunk (Box of 200) - Exterior Plus Grey Coating Fibre Backer Board Steel Light Section Phillips Head

• Self Drilling Cement Board Screws are specifically designed for fixing cement board steel dry-lining frames (max. 3.0mm). Self countersinking head for a secure and flush finish.
• Self-drilling point with a self-tapping 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.
• Self-drilling point for fixing to light section steel (Max. 3mm).
• Ribs under the head for improved countersinking.
• Fire Classification - A1.

4.2 x 42mm Self Drilling Cement Board Screws are specifically designed for fixing cement board steel dry-lining frames (max. 3.0mm). Self countersinking head for a secure and flush finish. Self-drilling point with a self-tapping 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. Self-drilling point for fixing to light section steel (Max. 3mm). Ribs under the head for improved countersinking. Fire Classification - A1. Cementitious board screws are for Cement based boards that are strong and rigid making them ideal for tiling. In addition, they are resistant to mould and may be considered for internal and external applications. Although cement boards are not waterproof, they are water resistant. Colour and finish may vary.