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Description
A4 Marine-Grade Stainless Steel Countersunk Wood Screw with Torx Drive (Fischer PowerFast A4)
An ultra-corrosion-resistant A4 (316 grade) stainless steel wood screw engineered for severe outdoor environments, coastal installations, chemical exposure, and marine timber construction.
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A4 / 316 Marine-Grade Stainless Steel: Head stamped with "A4", offering superior resistance against saltwater corrosion, industrial chemicals, and aggressive atmospheric conditions.
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Torx / Star Drive (TX): Precision star drive recess ensures maximum torque transfer and eliminates bit slippage or driver cam-out.
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Countersunk Head with Pocket Ribs: Under-head milling ribs allow the screw to cut cleanly into wood for a flush, burr-free finish.
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Aggressive Self-Tapping Thread: Sharp piercing tip with deep coarse threads provides immediate grip and maximum pull-out resistance without timber splitting.