Simpson Strong-Tie Marine Screws are engineered for the most demanding environments - offering long-term strength and corrosion resistance in coastal, saltwater, and chemically treated wood applications. Made from 316 stainless steel, these flat-head screws are built to withstand marine exposure without rusting, staining, or failing over time.

Designed with a sharp Type 17 point for fast starts and a deep thread profile for superior holding power, these screws drive cleanly and securely into wood while resisting withdrawal forces caused by moisture movement and structural load. The flat head provides a flush, professional finish—perfect for decks, docks, boat structures, and seaside construction.

Key Features:

• 316 Stainless Steel Construction – Provides unmatched corrosion resistance in saltwater, coastal, and high-moisture environments.
• Flat Head Design – Sits flush for a clean, professional appearance in decking, trim, or structural framing.
• Type 17 Point – Sharp tip enables quick starts and reduced splitting without pre-drilling in most wood types.
• Deep Thread Geometry – Enhances grip and pull-out strength in treated lumber and hardwoods.
• Code-Recognized Performance – Ideal for use in structural or exterior applications where durability and strength are critical.

Applications:

• Docks and marinas
• Boardwalks and piers
• Coastal decks and framing
• Boat lifts and water-access structures
• Saltwater-adjacent construction
• Pressure-treated lumber installations in wet environments

Installation:

• Use with a compatible bit (T25 star or square drive, depending on variant).
• Drive screws flush with the surface for optimal performance and appearance.
• Pre-drilling typically not required due to Type 17 point, though may be helpful in dense hardwoods.
• Avoid mixing stainless steel with carbon steel hardware to prevent galvanic corrosion.
• Follow all Simpson Strong-Tie installation guidelines and local building codes for structural or marine installations.

California Residents: WARNING