Hex head self-drilling roofing screws for metal or wood roofs. No pre-drilling required for faster installation. Rust-proof zinc plating with an EPDM sealing washer delivers a watertight seal. Self-tapping, coarse threads provide strong grip in metal panels and wood substrates. DIN 7504K quality fasteners, available in multiple lengths and diameters, sold in bulk for roofing projects.
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