Simpson Strong Tie - Strong-Drive WSV #9 Subfloor Screws - 2" (2000 Pack)

Simpson Strong-Tie has redesigned 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 coverings using the auto-feed Quik Drive screw system. The Strong-Drive WSV Subfloor screw is the only fastener to have been dual-tested to ICC-ES AC233 and AC120 for fastening wood-framed subfloors. These tests indicate that WSV Subfloor screws have higher lateral, shear, and shrinkage values ​​than common 10d nails, and that diaphragms constructed with WSV Subfloor screws meet or exceed the strength and stiffness of wood-framed diaphragms constructed with 10d nails. Also available is the Strong-Drive WSVF Subfloor screw for fire-resistant wood-based materials. The Strong-Drive WSVF Subfloor screw is available with a gray Quik Guard coating, whose corrosion resistance is recognized in IAPMO UES ER-192 for exposures 1 and 3, as described in ICC-ES AC257. Like the WSV Subfloor screw, the WSVF Subfloor screws are designed for dry applications. The WSVF screw coating system provides 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 through 4A and wood and wood-based materials treated with a fire retardant that is recognized in an evaluation report where the corrosion effects of the fire retardant chemical are referenced to code-prescribed protection systems for carbon steel fasteners.

• The redesigned point and thread design provide easier starts and reduce fastening torque by 25% (test data shows the Strong-Drive WSV Subfloor screw requires 25% less fastening torque in single-material glulam) - allows for up to 20% faster fastening (test data indicates the redesigned WSV thread design allows for installation of 20% faster screws)
• Lower installation torque also means less tool wear
• The recessed ribbed 6-lobe head allows for clean countersinking and a more secure bit hold, reducing stripping
• The holding power of WSV screws reduces gaps between the joist and subfloor that cause squeaky floors.