5/16 In. X 4 In. Washer Head Black Hcr Powerlag Screw (150-count)

SPAX Powerlags Structural Screws: The Ultimate Heavy-Duty Fastener for Code-Compliant Projects. If you need a high-performance fastener that meets rigorous building codes and excels under demanding conditions, SPAX Powerlags Structural Screws are your ideal choice. Engineered to replace conventional lag screws, these innovative fasteners offer exceptional holding power, streamlined installation, and unmatched versatilitywithout sacrificing quality or compliance. Whether youre a contractor working on large-scale structural builds or a DIY enthusiast tackling projects around the house, SPAX Powerlags provide the strength, reliability, and ease-of-use you need.