Simpson Strong-Tie Strong-Drive WSV HCKWSV134S Subfloor Screw, #9 Thread, 1-3/4 in L, Rimmed Flat Head, T25 Drive

Simpson Strong-Tie® has re-engineered its popular subfloor screw to reduce driving force and increase installation speed. The new Strong-Drive® WSV Subfloor screw has been developed for fastening subfloor sheathing using the Quik Drive auto-feed screw driving system. This testing indicates that the WSV Subfloor screws have lateral, shear and withdrawal values that exceed those of 10d common nails and diaphragms built with WSV Subfloor screws meet or exceed the strength and stiffness of wood frame diaphragms built with 10d nails. The coating system on the WSVF screws will provide corrosion resistance for use with wood and wood-based materials in dry service where the wood and wood-based materials have treatment retentions typical of AWPA Use Categories 1 to 4A and fire-retardant-treated-wood and wood-based materials that are recognized in an evaluation report where corrosion effects of the fire-retardant chemical are referenced to code prescribed protection systems for carbon steel fasteners.

Made of steel with a zinc finish, with applicable materials Wood, drive size T25, drive type 6-Lobe.

Application

For subfloor and sheathing projects

• Redesigned tip and thread pattern provides easy starts and up to 25% less torque while driving makes for up to 20% faster driving
• Less installation torque also means less wear on tools
• Deep six-lobe recessed ribbed head provides clean countersinking and more secure bit retention for fewer cam-outs
• The holding power of WSV screws reduces the gaps between the joist and subfloor that cause floor squeaks
• WSV screws can be easily backed out, allowing for future access to floor cavities