Power Pro 250 Pcs Structural Lag Screws (5/16 inch x 3-1/2 inch) | Patented Design Star Drive Heavy Duty Wood Screws | Multi-Layer Epoxy Coated Exterior Fasteners | ICC ESR-4017 Building Code Approved

Power Pro Structural Lag Screws are engineered to deliver fast, reliable, and corrosion-resistant fastening for heavy-duty wood-to-wood construction applications. These structural wood screws feature a patented thread design that drives faster and installs more screws per battery charge compared to standard competitive fasteners, replacing traditional hex lag screws with a more efficient single-step installation that requires no pre-drilling. The Type 17 point and serrated thread design start holes quickly without pre-drilling, improving installation speed and eliminating an extra preparation step. The engineered diamond shank reduces drive friction and torque during installation, allowing for smooth, consistent driving performance in heavy structural wood applications. These screws are ICC ESR-4017 certified and approved for use with AC257 treated lumber, meeting building code requirements for structural wood-to-wood connections. Finished with a durable multi-layer epoxy coating, these corrosion resistant structural lag screws deliver long-lasting protection in exterior environments and treated lumber applications. Designed to replace standard hex lag screws, Power Pro Structural Lag Screws provide engineered strength and holding performance for demanding indoor and outdoor wood construction projects. This 250-piece package of 5/16" x 3-1/2" structural lag screws is built for professional-grade fastening applications.

• PATENTED DESIGN FOR FASTER INSTALLATION AND SUPERIOR PERFORMANCE: Power Pro Structural Lag Screws feature a patented thread design that drives faster and installs more screws per battery charge compared to competitive fasteners, replacing standard hex lag screws with engineered efficiency for heavy-duty wood-to-wood connections.
• DIAMOND SHANK REDUCES DRIVE FRICTION AND TORQUE: The engineered diamond shank geometry minimizes contact between the screw shank and surrounding wood during installation, reducing drive friction and torque for smooth, consistent driving performance and extended battery life on the jobsite.
• CORROSION RESISTANT MULTI-LAYER EPOXY COATING: A durable multi-layer epoxy coating provides long-lasting corrosion protection for exterior structural applications and treated lumber, ensuring reliable fastening performance in demanding outdoor environments.
• BUILDING CODE APPROVED FOR STRUCTURAL WOOD CONNECTIONS: Power Pro Structural Lag Screws are ICC ESR-4017 certified and approved for use with AC257 treated lumber, meeting requirements for structural wood-to-wood connections under applicable building codes.
• DOME HEAD: Low profile head with depth code for post inspection.