S-91478A603 Length 5" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding wood applications
• Maximum torque transmission through external hex drive design, preventing tool slippage during high-tension installations
• Enhanced pull-out resistance with thread forming technology that creates stronger mating threads in wood substrates
• Reduced wood splitting through partial threading design that maintains shank strength while minimizing material stress
• Optimized thread engagement with 9 threads per inch configuration for balanced installation speed and holding power
• Industry-standard compatibility with 1/2" hex head dimensions for universal tooling and replacement convenience
• Deep penetration capability with 5" length and pointed tip for secure fastening in thick wood assemblies

Professional Applications & Engineering Value

These zinc-plated steel hex head wood screws deliver exceptional performance in structural wood applications where vibration resistance and long-term reliability are critical. The thread forming design eliminates the need for pre-drilling in many scenarios while creating compressed wood fibers that significantly improve pull-out strength compared to conventional cutting threads. The external hex drive configuration ensures maximum torque application without cam-out issues, making them ideal for high-stress connections in timber construction, pallet manufacturing, and heavy-duty furniture assembly. The partial threading maintains full shank diameter along most of the screw length, providing superior resistance to lateral forces while the pointed tip facilitates precise starting position in wood substrates.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 dimensional standards with Class 2A thread tolerances for consistent performance. These 5/16" diameter screws feature a 1/2" hex head width and 5" overall length with approximately 3" of threaded engagement. Fully compliant with RoHS 3 (2015/863/EU) hazardous substance restrictions and REACH (EC 1907/2006) regulations for industrial safety and environmental protection. The zinc plating provides reliable corrosion protection while maintaining electrical conductivity for grounding applications where required.