PowerLags 5/16 In. In. X 4 In. L T-40 Washer Head Serrated Structural Screws

Spax PowerLags are structural screws engineered for wood-to-wood applications in framing, decking, sheds, and other construction projects. The washer head design provides a larger bearing surface for secure, stable connections, while the patented thread serrations eliminate the need for pre-drilling and reduce driving torque, speeding up installation on job sites.

These screws feature an advanced HCR (High Corrosion Resistance) coating that protects against moisture and salt air, making them suitable for both interior and exterior applications, including treated lumber and coastal environments. The deep T-Star (T-40) drive allows for excellent bit engagement, and each fastener is stamped with its length for easy on-site identification.

Features and Benefits

• Washer Head Design: Larger bearing surface ensures secure connections.
• T-Star Drive: Deep T-40 drive provides excellent bit engagement for faster, easier installation.
• Thread Serrations: Patented thread design eliminates pre-drilling and reduces material stress.
• HCR Coating: Advanced corrosion-resistant coating protects against moisture and salt air for long-lasting performance.
• Length Stamp: Fastener length marked on the head for quick identification during installation.

Specifications

• Brand: Spax
• Model: 4581820801005
• Size: 5/16 In. x 4 In.
• Head Type: Washer head
• Drive Type: T-Star (T-40)
• Coating: HCR (High Corrosion Resistance)
• Count: 50 per pack
• Application: Wood-to-wood structural fastening