Simpson Strong-Tie Marine SHARX Screws are designed for unmatched holding power in exterior and marine-grade applications. Made from 316 stainless steel for strong corrosion resistance, they’re built for use in docks, decks, and other demanding environments exposed to moisture and salt. The flat head countersinks cleanly for a flush finish, while the combo drive offers installation flexibility with either Phillips or square bits.
Each screw features serrated threads and a Type-17 point, reducing the need for pre-drilling and minimizing wood splitting. Engineered to bite aggressively into a variety of materials, these screws deliver reliable fastening strength where you need it most.
Key Features:
- 316 Stainless Steel – Marine-grade corrosion resistance for wet or coastal conditions
- Combo Drive – Accepts both Phillips and square bits for installation flexibility
- Flat Head Design – Countersinks flush for a smooth, professional appearance
- Type-17 Point – Fast starts and reduced splitting without pre-drilling
- Aggressive Serrated Threads – Maximum holding power in wood and composite materials









