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Premium Hex Head Self-Drilling Roofing Screws with Plastic Caps. Self-Drilling Design: Simplifies installation and enhances efficiency for construction projects. Weather-Resistant: Plastic cap and PVC washer provide dual protection against corrosion. Wide Grade Range: Available in grades 3.6 to 12.9 for various strength requirements. Customization Support: OEM/ODM services available with tailored head shapes and materials. Multiple Certifications: Compliant with ISO, DIN, ANSI, GB, JIS, and other global standards. Versatile Applications: Ideal for roofing panels, facade cladding, and insulation boards.