General description Used for securing fibre cement profile sheets to light section steel (max. 5mm), these Timco 6.3 x 130mm Fibre Cement Board Screws come complete with heavy-duty EPDM and stainless steel washers to provide a water-tight seal, also known as a BAZ washer. They feature an exterior corrosion-resistant coating that withstands over 1,000 hours of salt spray, making them ideal for various applications. Technical specifications Washer Type: BAZ Thread Diameter: 6.3 mm Head Type: Hex EPDM Washer Diameter: 25 mm Type: For Light Section Steel Maximum Thickness: 5 mm Pack Type: Box Packs per Carton: 8 Pack Quantity: 50 Length: 130 mm Effective Thread Length: 46 mm Corrosion Rating: 3 (Urban & industrial areas with a low salt atmosphere) Socket Size: 8 mm Carton Finish: Exterior (Silver Organic) Included Items: 25 mm BAZ Washers Point Type: Self-Drilling No.3 Thread Type: 60° Self-Tapping with V Flutes Substrates: Steel Material: Case & Core Hardened Carbon Steel Recommended