Drilling Class 4 Hex - Corse with Seal

These high-performance, self-drilling screws feature a heavy-duty Class 4 galvanized coating, offering robust corrosion resistance suitable for coastal, industrial, and high-exposure environments. The hardened TEK-style point enables drilling through up to 4.5 mm of mild steel without pre-drilling, while the EPDM sealing washer provides a weatherproof seal to prevent moisture ingress and enhance wind uplift resistance—ideal for cladding, structural framing, and metal-to-metal fastening applications.

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See all Class 4 Metal Drilling