Simpson Strong-Tie Strong-Drive structural fasteners are engineered and extensively tested to efficiently meet your most demanding wood and metal applications. The Strong-Drive family is designed to install easier than other fastening methods, which saves time and money. The WSV Subfloor screw was developed for fastening subfloor sheathing using the Quik Drive auto-feed screw driving system. It has been re-engineered to reduce driving force and increase installation speed.
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 6-lobed 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
6-lobe T-25 drive bit (included)

Product Finish/Material: Yellow Zinc
Product Length: 1-3/4 in.
Length (in.): 1.75
Package Quantity: 1000
Head Type: Flat
Material: Steel
Drive Style: Star
Point Type: Standard
Thread Style: Standard
Size: #9
Finish: Zinc Coated
Colour Family: Gold Look
Material: Steel
Number of Pieces per Package: 1000
Assembled Depth (in inches): 0.333 inches
Assembled Width (in inches): 0.333 inches
Assembled Height (in inches): 1.25 inches
Assembled Weight (in lbs): 0.008 pounds