Designed to deliver dependable performance in outdoor decking projects, Simpson Strong-Tie No. 8 x 1-5/8 in. Lobe Flat Head Deck Screws combine durable stainless steel with a precise drive to help you build decks that look great and last longer. This 2.5 lb, 350-count boxed pack keeps your project well-supplied and organized from start to finish.
Why this screw stands out
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316 stainless steel with a coated finish for exceptional corrosion resistance in moisture-prone environments and coastal settings, helping decks resist rust and maintain a clean appearance over time.
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No. 8 thread with a 1-5/8" length is a versatile choice for typical deck board thicknesses, providing solid engagement into framing while keeping the board flush with the surface.
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Lobe drive design improves torque control and reduces cam-out, speeding installation and protecting both the bit and the screw head during driving.
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Flat head (countersunk) profile sits neatly with the deck surface for a neat, professional finish.
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Outdoor-ready packaging in a boxed format (350 screws per box) gives you ample supply for larger decks or multiple projects without constant reordering.
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Premium deck fastener from Simpson Strong-Tie, trusted for structural accuracy and long-term performance in exterior applications.
Ideal applications and scenarios
- Attaching deck boards to pressure-treated or naturally durable framing in wet or coastal climates where corrosion resistance is essential.
- Finishing outdoor decking projects for residential patios, docks, or porches that demand a clean, flush appearance.
- Renovating or repairing damaged decking where a reliable, long-lasting fastener is required.
- Projects where a robust, non-collated screw solution is preferred for hand tools or simple drilling setups in outdoor environments.
Practical tips for best results
- Even though these screws aren’t marketed as self-drilling or self-tapping, use a suitable pilot hole for dense woods or hardwoods to minimize splitting and optimize seating.
- Aim for a snug, flush seating with a steady hand to preserve the deck’s clean lines and avoid overtightening that could damage boards.
- Pair with an appropriate driver bit designed for lobe-drive heads to maintain consistent torque and prolong bit life.
- Store the boxed pack in a dry place to preserve finish quality and ensure readiness for your next outdoor project.
Whether you’re building a new deck from the ground up or refreshing an aging outdoor space, these Simpson Strong-Tie No. 8 x 1-5/8 in. Lobe Flat Head Deck Screws deliver the combination of corrosion resistance, precise drive, and finish you need for professional results that endure in outdoor environments.
