The Simpson Strong-Tie DSVT3R770 Deck-Drive DSV Wood Screw is a #10 x 3 in. exterior wood screw made for wood-to-wood fastening in decking and other outdoor wood builds. This is a deck screw designed for fastening wood decking and exterior wood components. Model Number DSVT3R770. If you are building a deck, fastening preservative-treated lumber, or working on exterior wood where clean countersinking and reliable holding power matter, this screw is built for that job.

What makes this screw matter on the job is how it goes in. Simpson Strong-Tie uses low-torque threads that reduce driving resistance, and the brand states they can allow up to 35% more screws to be driven on a battery charge. That is not just a lab number. On a deck build, it means less strain on the drill, fewer stalls, and less wasted time when you are running long rows of fasteners. The high-low thread design and Type-17 style fast-start point also help the screw grab quickly so you can get moving without predrilling in typical wood-to-wood fastening applications.

The head design is another reason this screw stands out. The rimmed flat head with nibs is made to countersink cleanly into deck boards, which helps leave a more finished surface instead of proud heads or torn-up fibers around the top of the fastener. That matters on visible decking, fascia, and trim where the finished look is part of the job. The tan finish is also there for a reason. It is meant to blend better with wood decking than a bright fastener would.

From a build standpoint, this screw is optimized for dimensional lumber and exterior wood applications, including preservative-treated decking and engineered wood applications listed by Simpson Strong-Tie. It is load rated for shear, pull-through, and withdrawal resistance, so this is not just a generic hardware-bin screw. It is an engineered fastening solution meant to perform in structural and semi-structural wood fastening where holding power and consistency matter.

For outdoor use, coating matters as much as thread design. The Quik Guard coating is intended to provide corrosion resistance in exterior conditions and certain preservative-treated wood applications. Simpson Strong-Tie specifically ties this coating to ICC-ES AC257 exposure conditions 1 and 3, and Lowe's notes it is ACQ approved. For deck builders and remodelers working with treated lumber, that is the kind of detail you want to see before you start sinking hundreds of screws into a project that has to hold up outside.

This box includes 770 screws, which makes this pack a practical choice for larger deck work, board replacement jobs, exterior stairs, railing-related wood fastening, or contractors who want enough stock on hand to keep moving. The drive is T25 6-lobe, and a matching driver bit is included, so you can open the box and get right to work. If you want a tan 3-inch wood screw for deck boards and general exterior wood fastening without stepping up to a mixed assortment or smaller retail pack, this is the contractor-size box that makes sense.

Simpson Strong-Tie DSVT3R770 Deck-Drive DSV Wood Screw for Real Deck Work

This is a smart buy if you need a contractor-size box of exterior deck screws that drive clean, start fast, and hold up in treated lumber applications.

• Who it's for: Deck builders, remodelers, carpenters, and serious DIYers fastening wood decking or exterior wood components.
• Why it stands out: The thread design, fast-start point, and nibbed flat head are all aimed at making repetitive wood fastening easier and cleaner, not just cheaper.
• Worth knowing: This is a 770-count box, so it makes the most sense when you have enough footage to justify buying in bulk instead of grabbing a small repair pack.

• What is this screw designed to fasten? It is designed for wood-to-wood fastening, including preservative-treated decking, exterior wood, and certain engineered wood applications.
• What drive size does it use? It uses a T25 6-lobe drive, and a matching driver bit is included.
• Is this screw rated for exterior use? Yes. It has a Quik Guard coating for corrosion resistance in exterior and certain preservative-treated wood applications, and the product is associated with ICC-ES AC257 exposure conditions 1 and 3.
• What is the size and box count? This version is #10 x 3 in. and comes in a 770-count box.