S-95526A550 Length 2 1/2" ASTM A153 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel coating for long-lasting performance in humid or outdoor environments
• Enhanced load distribution through flanged design that eliminates the need for separate washers and prevents surface damage
• Maximum torque transmission with external hex drive design for secure installation and reduced tool slippage
• Secure fastening in wood using thread-forming technology that creates strong, permanent threads without pre-drilling
• Optimized thread engagement with 7 threads per inch and partial threading for balanced holding power and installation efficiency
• Heavy-duty construction with 2-1/2" length and 3/8" diameter providing substantial penetration depth for structural applications
• Regulatory compliance assurance meeting ASTM A153, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

These hot-dipped galvanized steel wood screws deliver exceptional engineering value for demanding wood fastening applications. The flanged hex head design provides superior load distribution across wider surface areas, effectively preventing wood splitting and surface damage common in heavy construction. The thread-forming technology creates precise, permanent threads within wood substrates, eliminating the need for pre-tapping and ensuring vibration-resistant connections. With external hex drive compatibility, these screws accommodate high-torque installation tools while minimizing cam-out incidents. The hot-dipped galvanized coating offers robust protection against environmental corrosion, making these wood screws ideal for outdoor structures, deck building, timber framing, and other construction applications where moisture resistance and long-term durability are critical performance requirements.

Specification Summary & Compliance

This 3/8" x 2-1/2" wood screw features inch system measurements with a hex head (0.563" width, 0.39" height) and flanged design (0.81" diameter). The partially threaded configuration includes a right-hand thread direction with 7 threads per inch and minimum thread length of 1-1/4". Manufacturing and quality compliance includes ASTM A153 specification for zinc coating, RoHS 3 (2015/863/EU) Compliant for hazardous substance restrictions, and REACH (EC 1907/2006) Compliant for chemical safety standards, ensuring reliable performance across industrial and construction applications.