Rawlplug OC Hex Self Drilling Screws For Metal Sheets - EPDM Washer - Zinc The special drill bit shape designed to provide quick and trouble-free installation in metal constructions made from cold formed sections. Coloured polyester protective coating with a thickness of 45-50 um (RAL, NCS, RR), provides additional protection against corrosion. Various colours available to suit all metal sheet variants. UV stabilizers ensure colour quality over a long period of use. Hardened surface of the thread (flexible core). Corrosion-resistant zinc coating of thickness not less than 12 um. The thread's shape and height are closely related to the intended use of self drilling fixing into steel construction. Self-vulcanizing EPDM washer. Temperature and UV resistant. The special shape of the washer ensures proper seating of the sealing material on the outer cladding material fixture which guarantees a proper seal. The drill bit is designed to provide quick and trouble-free installation in the steel. Sharp point of the drill prevents movement of the surface of the fixture. Base Material Structural Steel Metal Sheet Profiles Application Categories Cladding Construction Roof Profiled Sheet