Corrugated Timber Tek Roofing Screws Self-Drilling 6.3mm (14g) x 22mm + 8mm Hex Key (100 Pack)

These 6.3 mm × 22 mm self-drilling TEK screws are designed for securely fastening steel cladding panels

• Built-in Washer: Equipped with a bonded 16 mm sealing washer to guarantee weatherproof integrity
• Hexagonal Hex Head + Free Bit: Features an 8 mm (⅝″) hex head for easy manual or power-driving, along with a complimentary ¼″ TEK bit included in the pack 
• Self-Drilling Power: Compact design effortlessly pierces steel up to 2.5 mm thick, eliminating the need for pre-drilling 
• Pre-fitted with a weatherproof EPDM rubber washer bonded to a metal backing, the screws form a tight seal against moisture, protecting structures from leaks and corrosion.