About This

【 Durable Construction 】 - High-strength 1022A carbon steel screws paired with corrosion-resistant rubber washers (EPDM) ensure long-lasting performance, resistant to rust and weathering.
【Black Hex Head】 The process of baking varnish provides superior corrosion resistance and exterior protection for 5/16" hex head with high-torque drive when installed. Jet black matches popular roofing colors.
【 Self-Drilling Efficiency 】 - Sharp self-drilling tips eliminate pre-drilling needs, while coarse threads provide superior grip in wood, plastic, and thin metal sheets under 2.4mm thickness.
【 Weatherproof Seal 】 - 13.8mm (1/2") compressible washers create a watertight barrier by expanding under pressure, effectively covering screw holes to prevent leaks.
【 Applications 】 - Ideal for securing metal panels, composite boards, plastic sheets, and wood in roofing, construction, manufacturing, and DIY projects. Hex head design allows high-torque driving.