Simpson Strong-Tie’s Strong-Drive WSVF subfloor screw features a fire-retardant coating that provides corrosion resistance when used with fire-retardant-treated wood and wood-based materials that might otherwise compromise the performance of carbon-steel fasteners. According to Simpson, the WSVF provides a no-squeak, efficient connector for replacement projects with fire-resistant subfloor materials, and like other fasteners in the WSV line, the WSVF screw has a redesigned tip and thread pattern to provide easy starts, lower driving torque, and faster driving. Contact a local distributor for pricing. strongtie.com

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