Powerlag 5/16 In. In. X 3.5 In. L T-40 Washer Head Serrated Structural Screws

The Spax PowerLag 5/16 in. x 3.5 in. Structural Screw is a high-performance fastener engineered for strong, secure wood-to-wood connections in decks, cabinetry, framing, and other structural applications. These screws are equally suited for both professional contractors and DIY enthusiasts who demand reliability and durability in their fastening solutions.

The serrated thread design enables self-tapping into wood without pre-drilling, saving time on installation while maintaining precision and holding power. The T-40 washer head provides excellent load distribution and a secure grip, making these screws ideal for critical applications where strength is essential. Coated for durability, these screws are built to withstand various indoor and outdoor environments and can be used inside homes without concern for rust.

Features and Benefits

• Self-Tapping Design: Serrated threads allow the screw to tap into wood without pre-drilling, reducing installation time and effort while maintaining excellent holding power.
• Corrosion-Resistant Coating: Protective coating ensures the screws resist rust and maintain performance in both indoor and outdoor applications.
• T-40 Washer Head: The precision-engineered washer head distributes load evenly across the fastening surface, providing enhanced grip and performance in demanding applications.
• Suitable for Multiple Materials: While optimized for wood, these screws work effectively with drywall, plastic, masonry (with pre-drilling), and steel up to 24 gauge.
• Convenient Packaging: Packaged in a 12-count clamshell for organized storage and easy access on the job site.

Specifications

• Brand: Spax
• Model: 45818208009043
• Size: 5/16 in. diameter x 3.5 in. length
• Drive Type: T-40
• Head Style: Washer head
• Thread Type: Serrated
• Finish: Coated for durability
• Pack Quantity: 12
• Packaging: Clamshell