Simpson WSV Subfloor Screw #9 x 3 in. T25 Yellow Zinc Collated 500-Pack HCKWSV3S CS Coiled Straps Stair treads

Stair treads

Made from heavy-duty 7-gauge steel for structural integrity

What makes the quill on this mill more accurate and durable than a standard quill

Are these screws suitable for marine or high-corrosion environments

Simpson WSV Subfloor Screw #9 x 3 in. T25 Yellow Zinc Collated 500-Pack HCKWSV3S CS Coiled Straps Stair treadsThe Simpson Strong Tie Strong Drive WSV SUBFLOOR Screw (Model HCKWSV3S) is a collated #9 x 3 inch, T25 6 lobe, yellow zinc coated subfloor fastener engineered specifically for fastening subfloor sheathing using the Quik Drive auto feed screw driving system. Simpson Strong Tie has re engineered this structural fastener with a redesigned tip and variable thread pattern to reduce driving force and increase installation speed delivering up to 25% less