4.8 mm x 25 Roofing Screws, Hex Head Self Drilling Roof Screws With Rubber Sealing Washer, Rust Proof, Weather Resistant, Zinc Plated, Coarse Threaded, Clading Steel Screw for Tin (50 pcs)

HEX HEAD ROOFING SCREW: Galvanized screws with selfdrilling tip for tin corrugated sheeting metal panels systems. Screws with rubber washer made of carbon steel and has the highest quality weather resistance and selfdrilling tip. EPDM WASHER: EPDM (ethylene propylene diene monomer) washer ensures protection against moisture and its passage to the self-drilling or construction (cannot be over-tightened or under-tightened). Reduces thermal motion effects. COROSION RESISTANT: Suitable for outdoor use zinc plated steel 12um supports LST EN ISO 12944-2:2000 high corrosion protection standard. RAL Powder coated Hex Head 60-80um collor matcing and resistan to damage during instalation. INSTALATION: SW 8 hex nut driver needed, no predrill neded, self-drilling, fast instalation, self-tapping tip drills through the steel les than in 2s. COMPATIBILITY: Commonly used for thin roof and segments instalation to the wood frame (both hardwood and softwood). Screws with EPDM (ethylene propylene diene monomer) washer has the highest quality weather resistance fits for wide variety roofing sheets.