S-91550A318 Length 5/8" Wood Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust, extending service life in various woodworking environments.
• Superior Torque Transfer & Reduced Cam-Out: Unique Phillips/Square dual drive system ensures maximum power application and minimizes driver slippage during installation.
• Excellent Holding Power: Fully threaded design with 15 threads per inch creates exceptional pull-out resistance in plywood and OSB applications.
• Simplified Installation: Thread forming technology eliminates need for pre-tapping, creating strong, permanent connections while saving time and labor.
• Clean, Flush Finish: Standard flat head with 90° countersink angle sits perfectly flush with material surface for professional-looking results.
• Optimized Material Compatibility: Specifically engineered for plywood and oriented strand board with precise thread diameter and pointed tip for easy starting.
• Environmental Compliance: RoHS 3 compliant construction ensures safe, environmentally responsible manufacturing standards.

Professional Applications & Engineering Value

These No. 8 wood screws are precision-engineered to address common challenges in wood construction and assembly. The zinc-plated steel material provides essential corrosion protection while maintaining high tensile strength for demanding applications in plywood and OSB substrates. The innovative thread forming technology creates stronger connections than conventional screws by displacing material rather than removing it, resulting in superior resistance to vibration loosening and pull-out forces. The Phillips/Square dual drive system solves the persistent problem of cam-out, allowing professionals to apply maximum torque without damaging screw heads or workpieces. With fully threaded design and precise 15 TPI configuration, these screws distribute clamping force evenly along the entire fastener length, preventing material splitting while ensuring reliable, long-term performance in furniture manufacturing, cabinetry, and structural wood assemblies.

Specification Summary & Compliance

These wood screws feature precise inch system dimensions including No. 8 screw size, 5/8" length, and 0.164" thread diameter with standard right-hand threads. The flat head design incorporates a 90° countersink angle for flush installation, compatible with 5/64" drill bits for proper pilot holes. Manufacturing follows industry standards for thread forming screws with fully threaded shanks and pointed tips for easy penetration. The product is fully RoHS 3 (2015/863/EU) compliant, meeting stringent environmental regulations for hazardous substance restrictions in electrical and electronic equipment applications.