4.8 mm x 25 Roofing Screws, Hex Head Self-Drilling Color (RAL 6005 Moss Green) Roof Screws with EPDM Sealed Washer, Rust Proof Zinc Plated Hardened Coarse Threads Screw for Outdoor Use (50 pcs)

HEXAGONAL HEAD ROOF SCREW COLOR: The screw for lightweight roofing systems is made of carbon steel and features a high quality UV resistant lacquer coating that ensures long-lasting colour matched to the roofing material. EPDM WASHER: EPDM rubber washer ensures protection against moisture and its passage during self-drilling or installation in construction (it cannot be tightened too much or too little). Reduces the effects of thermal movement. CORROSION RESISTANT: Suitable for outdoor use 12um galvanized steel complies with LST EN ISO 12944-2:2000 standard for a high level of corrosion protection. RAL 60-80um powder-coated hexagon head with internal coating resistant to damage during installation. INSTALLATION: SW 8 hex screwdriver needed, no pre-drilling required, self-drilling, quick installation, self-tapping bits through steel in less than 2 seconds. COMPATIBILITY: Commonly used for installing thin roofs and panels on wooden frame (both hardwood and softwood).