Product Description
The Simpson Strong-Drive WSV Subfloor Screw is a collated #9 x 1-3/4 in. fastener engineered specifically for fastening subfloor sheathing to wood framing using the Quik Drive auto-feed screw driving system. Re-engineered from the ground up, this screw combines a redesigned high-low threaded point with a variable thread design to deliver faster, more consistent drives on every pull of the trigger - making it a dependable choice for contractors who need high-volume subfloor fastening without sacrificing holding power or code compliance.
Key Features
- Redesigned tip and variable thread pattern provides easy starts and up to 25% less driving torque - translates directly to up to 20% faster installation, so crews cover more floor in less time
- Reduced installation torque puts less stress on your tools - extends the service life of drivers and reduces downtime from tool wear on large subfloor jobs
- Deep 6-lobed recessed ribbed head with T25 6-lobe drive - countersinks cleanly and locks the bit in place for fewer cam-outs and a consistently flush finish
- Exceptional holding power pulls the subfloor panel tight to the joist - minimizes the gaps that cause floor squeaks, helping to keep finished floors quiet long after installation
- Screws can be easily backed out - allows future access to floor cavities without damaging surrounding material, adding long-term flexibility to the assembly
- Curved collation strip designed for Quik Drive auto-feed systems - maintains feed consistency and reduces jams when driving at production speed
- Dual-evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening - provides code-recognized approval for structural subfloor sheathing applications, supporting permit and inspection requirements
- Yellow-zinc coating applied per ASTM F1941 - meets a defined industry standard for corrosion resistance and coating consistency across the entire fastener
- T25 drive bit included with each pack - means the right bit is on hand immediately, with no separate accessory purchase required to get started
Why This Product
- Engineered for speed without sacrificing holding power - the redesigned thread geometry and high-low point combine to cut driving torque by up to 25% and boost installation speed by up to 20%, making this screw one of the more practical upgrades available for high-volume wood subfloor work
- Purpose-built for auto-feed subfloor fastening - designed specifically to work with the Simpson Strong-Tie Quik Drive PRO200S, PRO250G2, and Project Pro systems, so the collation, geometry, and drive type are all matched to the tool rather than adapted from a general-purpose fastener
- Addresses floor squeaks at the source - the holding power of the WSV design pulls panels tight to framing and maintains that contact over time, targeting the joist-to-panel gap that is the primary cause of squeaky floors in wood-frame construction
- Code-evaluated for structural subfloor applications - dual listing under ICC-ES AC233 and AC120 gives contractors and inspectors a recognized compliance path for wood-frame subfloor fastening without additional engineering sign-off on standard applications
Specifications
- Model Number (MPN): HCKWSV134S
- Screw Size: #9
- Length: 1-3/4 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: ICC-ES AC233 and AC120
Frequently Asked Questions
- What auto-feed screw driving systems are compatible with these collated screws?
- The WSV Subfloor Screw is designed to install with the Simpson Strong-Tie Quik Drive PRO200S, PRO250G2, or Project Pro auto-feed screw driving systems and their compatible attachments. A T25 drive bit (model BITX25) is included with each 1,000-count pack.
- Are these screws approved for structural subfloor fastening applications?
- Yes. The WSV Subfloor Screw is dual-evaluated under ICC-ES AC233 and AC120 for wood-frame subfloor fastening, providing code-recognized approval for structural subfloor sheathing applications.
- How do these screws help prevent floor squeaks?
- The holding power of the WSV screw minimizes gaps between the joist and subfloor sheathing, directly addressing the root cause of floor squeaks. Additionally, the screws can be easily backed out if future access to floor cavities is needed.
- What coating do these screws have, and what standard does it meet?
- These screws feature a yellow-zinc coating applied in accordance with ASTM F1941. The coating is what gives the screws their distinctive yellow appearance and provides a standardized level of corrosion resistance.
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