Product Overview
This product is an extended hex flange self-drilling screw, specification 14-10×75, made of hardened carbon steel with a CL3 long-term anti-corrosion coating. It comes pre-installed with an EPDM composite waterproof washer. The head can be painted in ivory white, brick red, or black. It utilizes an extended drill tail for no-drill self-drilling/tapping, specifically built for thick-layer color steel enclosure structures, balancing fastening, waterproofing, and decorative effects.
Product Applications
Metal Roofing Engineering: Fixing color steel tiles, antique steel glazed tiles, rock wool/polyurethane sandwich panels to steel or wood purlins.
Steel Construction Enclosures: Fastening boards for factories, warehouses, carports, sunrooms, farm sheds, and exterior walls.
Prefabricated Light Steel Architecture: Long-term fixation of roof and wall enclosure panels for light steel villas.
Outdoor Rain Sheds and Small Steel Structures: Splicing boards for open-air sunshades, equipment rain sheds, and simple steel structure enclosures.
Applicable Environments: Moderate corrosive outdoor scenarios like inland suburbs and light sea breeze areas; not suitable for severe salt spray coastal or heavy chemical corrosion factory areas (for those, CL4 anti-corrosion drill-tail screws are recommended).
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