S-95526A400 Length 2 1/2" ASTM A153 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from hot-dipped galvanized steel coating, ensuring long-term reliability in outdoor or humid wood applications
• Enhanced driving efficiency with external hex head design, allowing high torque application and reducing installation time
• Excellent holding power through thread forming design that creates strong, permanent threads in wood without pre-drilling
• Optimized load distribution with flanged design that eliminates the need for separate washers and prevents surface damage
• Reduced splitting risk with partially threaded shank that minimizes wood stress while maintaining maximum pull-out strength
• Reliable performance with 9 TPI thread pitch providing optimal balance between fast installation and superior grip in various wood types
• Industry compliance assurance meeting ASTM A153 for coating quality and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These hot-dipped galvanized steel wood screws deliver exceptional engineering value for demanding wood construction and fabrication projects. The thread forming design eliminates common installation challenges by creating precise mating threads that significantly reduce the risk of wood splitting, particularly in hardwoods and composite materials. The external hex drive system provides superior torque transmission compared to standard drives, preventing cam-out during high-stress installations. With their heavy-duty 5/16" diameter and 2-1/2" length, these screws are engineered for structural applications where vibration resistance and long-term integrity are critical. The combination of partial threading and flanged design ensures optimal clamp load distribution while the pointed tip facilitates accurate positioning. Ideal for outdoor structures, deck building, timber framing, and industrial wood assemblies where environmental exposure demands maximum corrosion protection.

Specification Summary & Compliance

These wood screws feature precise 0.313" thread diameter with 9 threads per inch and 1-1/4" minimum thread length for consistent performance. Manufacturing complies with ASTM A153 specification for hot-dip galvanized coatings, ensuring uniform zinc protection. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they contain no restricted substances. The right-hand threading and partially threaded configuration follow industry standards for wood fastening applications, while the hex head with 1/2" width and 0.32" height provides standardized tool compatibility.