The Simpson Strong-Tie Strong-Drive WSV2S SUBFLOOR Screw is a collated #9 x 2-inch fastener engineered specifically for fastening subfloor sheathing using the Quik Drive auto-feed screw driving system. Re-engineered from the ground up, the WSV screw features a redesigned tip and variable thread pattern that reduces driving force by up to 25% and increases installation speed by up to 20% compared to earlier designs - delivering measurable time and cost savings on the job site. The deep 6-lobed recessed ribbed head countersinks cleanly and retains the drive bit firmly, minimizing cam-outs and tool wear. With exceptional holding power that closes gaps between the joist and subfloor to eliminate floor squeaks, and the ability to back out screws for future access to floor cavities, the WSV screw is a premium structural fastening solution for wood-frame subfloor assemblies. Yellow zinc coating is applied in accordance with ASTM F1941, and the screw is dual-evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening. This package contains 2,000 collated screws with a curved collation strip and includes a 6-lobe T25 drive bit (model BITX25).

Key Features

• Up to 25% less torque while driving - Redesigned tip and thread pattern provides easy starts and significantly reduced driving force for up to 20% faster installation.
• Reduced tool wear - Lower installation torque means less stress on auto-feed screw driving tools, extending tool life.
• Deep 6-lobed recessed ribbed head - Provides clean countersinking and more secure bit retention for fewer cam-outs during high-volume installation.
• Eliminates floor squeaks - The holding power of WSV screws reduces gaps between the joist and subfloor that cause squeaking over time.
• Easily backed out - WSV screws can be reversed and removed, allowing for future access to floor cavities when needed.
• Variable thread design - Optimized thread geometry works in concert with the high-low threaded point for reliable engagement in subfloor sheathing applications.
• 2/3-threaded shank - Unthreaded upper shank portion pulls mating material tight for a secure, squeak-resistant connection.
• Curved collation - Engineered for use with compatible Quik Drive auto-feed screw driving systems for continuous, high-speed installation.
• Dual code evaluation - Evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening, supporting permit-ready installations.
• Yellow zinc coating per ASTM F1941 - Coating applied in strict accordance with ASTM F1941 specifications.
• T25 6-lobe drive bit included - Each package includes one model BITX25 6-lobe T25 drive bit.
• 2,000-count package - High-quantity packaging supports large-scale subfloor installations.

Specifications

• Model Number (MPN): WSV2S
• Screw Size: #9
• Length: 2 in.
• Head Type: Rimmed Flat Head with Nibs
• Head Diameter: 0.333 in.
• Drive Type: T25 6-Lobe
• Thread Type: Variable Thread Design
• Shank Type: 2/3-Threaded Shank
• Point Type: High-Low Threaded Point
• Collation Type: Curved
• Coating / Finish: Yellow-Zinc Coated (per ASTM F1941

Frequently Asked Questions

Which auto-feed screw driving systems are compatible with these collated WSV subfloor screws?

The WSV2S screws are designed to install with the Simpson Strong-Tie Quik Drive PRO200S, PRO250G2, PRO300S, or Project Pro auto-feed screw driving systems and their compatible attachments. They are not intended for use with standard hand-held drills or non-Quik Drive collated systems.

What drive type does the WSV2S use, and is a drive bit included?

The WSV2S uses a T25 6-lobe drive type. Each package includes a 6-lobe T25 drive bit (model BITX25), so you can begin installation without sourcing a separate bit.

Are these screws approved for structural subfloor fastening applications?

Yes. The WSV2S screws are dual-evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening, making them suitable for structural subfloor sheathing applications that require code-recognized fasteners. The yellow zinc coating is applied in accordance with ASTM F1941.

Can WSV2S screws be removed after installation if access to the floor cavity is needed?

Yes. WSV2S screws can be easily backed out, allowing for future access to floor cavities without damaging the surrounding subfloor sheathing. This makes them a practical choice when periodic access below the subfloor may be required.