4.8 mm x 25 Roofing Screws, Hex Head Self Drilling Color (RAL 8019 Grey Brown) Roof Screws with EPDM Sealed Washer, Rust Proof Zinc Plated Hardened Coarse Threads Screw for Outdoor Use (50 pcs)

Coloured Hex Head Roofing Screw - Screw for lightweight housing systems is made of carbon steel and has the highest quality UV resistant paint coating, providing a lasting color to match the roofing material. EPDM Washer: EPDM washer provides protection against moisture and its passage for self-drilling or construction (cannot be tightened too loose or too tight). Reduces thermal motion effects Corrosion resistant: suitable for outdoor use galvanised steel 12um supports LST EN ISO 12944-2:2000 high corrosion protection standard. RAL powder coated hex head 60-80 µm (2.4-3.1 mils) color frosted and resistant to damage during installation. Installation: SW 8 hex nut screwdriver required, no pre-drilling required, self-drilling, quick installation, self-tapping tip drills through the steel less than in 2s. COMPATIBILITY: Commonly used for thin roof and segment mounting on wooden frame (hardwood and softwood).