Product Description
The Simpson Strong-Drive WSV Subfloor Screw, #9 x 3 in., T25 Yellow Zinc Collated 500-Pack is a structural fastener engineered specifically for fastening subfloor sheathing to wood framing using the Simpson Strong-Tie Quik Drive auto-feed screw driving system. Re-engineered from the ground up, the WSV screw features a redesigned high-low threaded tip and variable thread pattern that reduce driving force and increase installation speed - making it a high-performance solution for wood-to-wood and subfloor-to-wood fastening applications where speed, holding power, and floor squeak prevention matter most. Each 500-count package includes one T25 6-lobe drive bit to get you started right away.
Key Features
- Redesigned tip and variable thread pattern provide easy starts with up to 25% less torque and up to 20% faster driving - crews get more done per shift while reducing physical strain on the installer.
- Reduced installation torque means less wear on tools - extending the service life of your driver and lowering maintenance costs over time.
- Deep 6-lobe T25 recessed ribbed head delivers clean countersinking and secure bit retention - fewer cam-outs mean a cleaner finished surface and less time stopping to reposition the bit.
- High holding power minimizes gaps between the joist and subfloor - directly addressing the root cause of floor squeaks for a quieter, more stable floor assembly.
- Screws can be easily backed out after installation - allowing future access to floor cavities without damaging the subfloor or surrounding material.
- Curved collation strip keeps screws aligned and feeds consistently - compatible with the Quik Drive PRO300S auto-feed system for uninterrupted production-pace installation.
- Yellow-zinc coating applied per ASTM F1941 - provides a standardized corrosion-resistant finish suited for interior subfloor applications.
- Dual-evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening - giving inspectors, contractors, and building officials a recognized code basis for use on permitted projects.
- Includes one T25 6-lobe drive bit - so you can begin installation immediately without sourcing additional accessories.
Why This Product
- Engineered to eliminate floor squeaks at the source - the WSV screw's holding power pulls the subfloor sheathing tight against the joist, closing the gaps that cause squeaks, rather than just masking the symptom.
- Built for production-pace installation with the Quik Drive system - the curved collation format, reduced driving torque, and faster drive speed work together to help crews fasten subfloor panels significantly faster than traditional methods, without sacrificing structural integrity.
- Code-evaluated confidence on permitted work - dual evaluation under ICC-ES AC233 and AC120 means these fasteners meet recognized standards for wood-frame subfloor fastening, reducing back-and-forth with inspectors on job sites where compliance documentation is required.
- Re-engineered design protects your tools as well as your schedule - less torque required per screw translates directly into reduced driver wear, fewer bit replacements, and lower total cost of ownership across large subfloor installations.
Specifications
- Model Number (MPN): HCKWSV3S
- Screw Size: #9
- Length: 3 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)
- Code Evaluation: Dual-evaluated under ICC-ES AC233 and AC120
- Compatible Installation System: Simpson Strong-Tie Quik Drive PRO300S auto-feed screw driving system or attachment
- Quantity: 500
Frequently Asked Questions
- What tool or system is required to install these collated subfloor screws?
- The WSV SUBFLOOR screws are designed to install with the Simpson Strong-Tie Quik Drive PRO300S auto-feed screw driving system or compatible attachment. Each 500-count package includes one T25 6-lobe drive bit (model BITX25) to get you started.
- How do these screws help prevent squeaky floors?
- The WSV screw's holding power reduces the gaps that can develop between the joist and the subfloor - those gaps are a primary cause of floor squeaks. Additionally, the screws can be easily backed out if needed, allowing future access to floor cavities without damaging the subfloor.
- What performance advantages does the redesigned tip and thread pattern offer?
- The redesigned high-low threaded point and variable thread design provide easy starts and deliver up to 25% less torque while driving, resulting in up to 20% faster installation speeds compared to previous designs. The reduced torque also means less wear on driving tools during extended use.
- Are these screws code-evaluated for subfloor applications?
- Yes. The WSV SUBFLOOR screws are dual-evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening. The yellow-zinc coating is applied in accordance with ASTM F1941.
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