S-98643A390 Length 2 1/2" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-lasting performance in humid or outdoor wood applications
• Enhanced driving efficiency through the square drive design, providing maximum torque transfer and reducing cam-out during installation
• Self-tapping capability with thread cutting design, eliminating the need for pre-drilling and speeding up assembly processes
• Secure flush mounting with the 90° flat head and standard countersink profile, creating a smooth surface finish in wood materials
• Reliable anti-rotation locking via serrations under the head, preventing loosening under vibration in wood structures
• Optimized thread engagement with partially threaded shank and 15 TPI design, delivering superior pull-out resistance in wood
• Versatile drilling performance with self-drilling tip, enabling direct penetration into various wood types without pilot holes

Professional Applications & Engineering Value

These No. 8 wood screws with thread cutting design solve critical challenges in wood construction and industrial assembly. The 18-8 stainless steel composition provides exceptional resistance to rust and corrosion, making them ideal for outdoor furniture, decking, and marine applications where moisture exposure is common. The square drive system ensures maximum torque transmission, preventing strip-out during high-torque installation in hardwoods. With their self-drilling tip and thread cutting capability, these screws eliminate the time-consuming need for pre-drilling, significantly reducing labor costs in high-volume woodworking operations. The serrations locking feature maintains tight fastening in vibrating environments, while the 90° countersink angle ensures flush mounting for professional-grade finishes in cabinetry and structural wood assemblies.

Specification Summary & Compliance

These wood screws feature precise inch system measurements with No. 8 screw size, 2-1/2" length, and 0.164" thread diameter. The thread cutting design follows standard Type 17 tapping screw specifications with 15 threads per inch and partial threading. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial compliance for global distribution and use in professional wood applications.