Self-drilling screws designed for stitching two metal roofing sheets together without the need for pre-drilling. Features a self-drilling point, tapered shank, and a washered hexagon head. Suitable for clean, dry, and low humidity environments. Maximum clamping thickness of 10mm and maximum drilling thickness of 1.6mm. Approved to BS EN 10666 (DIN 7504). Includes 16mm EPDM washers.