S-92351A599 Length 4" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in humid or outdoor environments
• Maximum torque application through the external hex drive design, preventing stripping during high-tension installations
• Enhanced holding power with thread forming tapping that compacts wood fibers rather than cutting them
• Optimized load distribution through partial threading that maintains shank strength while providing secure engagement
• Industry-standard compatibility with 1/2" head width and standard hex tools for seamless integration
• Reduced installation effort with pointed tip design that facilitates precise starting and straight driving
• Extended thread engagement with 2-1/2" minimum thread length for deeper penetration in demanding wood applications

Professional Applications & Engineering Value

This heavy-duty wood screw addresses critical challenges in wood construction and industrial applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition provides exceptional protection against rust and chemical degradation, making it ideal for outdoor structures, marine environments, and high-moisture applications. The thread forming design creates stronger connections by compressing wood fibers rather than removing material, significantly reducing the risk of pull-out in softwoods and composite materials. With its external hex drive configuration, contractors can apply maximum torque without cam-out issues, ensuring secure fastening in decking, timber framing, and structural wood assemblies. The partially threaded shank maintains diameter integrity while allowing for precise clamping force distribution across joined materials.

Specification Summary & Compliance

This 5/16"-9 x 4" wood screw features precision right-hand threads with approximately 9 threads per inch and meets ASME B18.2.1 dimensional standards for consistent performance and interchangeability. The manufacturing process adheres to strict quality controls ensuring dimensional accuracy and thread integrity. Environmental compliance is verified through RoHS 3 (2015/863/EU) certification and REACH (EC 1907/2006) compliance, confirming the absence of restricted hazardous substances. The screw's thread forming method and partial threading configuration provide optimal performance characteristics for wood fastening applications across industrial and construction sectors.