S-94048A418 Length 2 1/2" ASME B18.2.1, ASTM A307, SAE J429 Wood Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from hot-dipped galvanized steel coating, ensuring long-term durability in outdoor or humid wood applications
• Maximum torque transmission through the external hex drive and hex head design, preventing cam-out during high-tension installations
• Superior holding power with thread forming technology that displaces wood fibers without pre-drilling, creating permanent, vibration-resistant connections
• Optimized load distribution from the 5/8" diameter and partial threading, concentrating grip strength where needed while reducing material stress
• Industry-standard compatibility meeting ASME B18.2.1, ASTM A307, and SAE J429 specifications for reliable performance in structural wood fastening
• Environmental compliance assurance with RoHS 3 and REACH regulations, making them suitable for regulated construction projects
• Quick installation efficiency with pointed tip and right-hand threading, enabling faster penetration and reduced assembly time

Professional Applications & Engineering Value

These hot-dipped galvanized steel wood screws deliver critical corrosion protection for outdoor timber structures, decking, and permanent wood assemblies exposed to weather elements. The thread forming design eliminates splitting by compressing wood fibers rather than removing them, providing up to 30% greater pull-out resistance compared to conventional threaded fasteners. With their external hex drive system and substantial 0.938" head width, contractors can apply maximum torque without stripping drive surfaces, making them ideal for heavy-duty wood construction where vibration resistance and long-term structural integrity are paramount. The partial threading configuration prevents joint loosening while the 5 TPI coarse thread profile ensures rapid installation in both softwoods and hardwoods.

Specification Summary & Compliance

Manufactured to Class 2A thread tolerances with 5/8" diameter and 5 threads per inch configuration. Complies with ASME B18.2.1 dimensional standards, ASTM A307 material specifications, and SAE J429 mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives. The hot-dipped galvanized coating provides superior corrosion protection compared to electroplated alternatives, with minimum thread length of 1.667" ensuring sufficient engaged threads for optimal load capacity.