S-90031A591 Length 3 1/2" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, extending service life in humid or demanding wood environments.
• Efficient thread forming design creates strong, permanent threads in wood without pre-tapping, reducing installation time and tool wear.
• Clean, flush finish with standard flat head and 82° countersink angle for a professional appearance and snag-free surface.
• Optimized for wood applications with pointed tip and partial threading for reduced splitting and superior pull-out resistance.
• Reliable drive engagement using Phillips No. 2 drive style, minimizing cam-out and ensuring consistent torque application.
• Versatile material compatibility with specific drill bit recommendations (1/8" for hardwood, 7/64" for softwood) for precise, secure fastening.
• Compliance with global safety standards including RoHS 3 and REACH, ensuring environmental responsibility and workplace safety.

Professional Applications & Engineering Value

These No. 12 wood screws are engineered with thread forming technology that displaces material to create robust, vibration-resistant connections in wood substrates. The black-oxide steel construction provides essential corrosion protection for interior and protected exterior applications, while the flat head design with 82° countersink angle ensures seamless integration into wood surfaces without protrusion. The partially threaded configuration concentrates holding power at the engagement point, preventing wood splitting while maximizing pull-out strength. Ideal for furniture manufacturing, cabinetry, and structural wood assemblies, these screws deliver consistent performance with reduced installation effort and long-term reliability in both hardwood and softwood applications.

Specification Summary & Compliance

Precision manufactured to inch system standards with 0.216" thread diameter and 11 threads per inch for optimal wood engagement. Features right-hand threading and standard flat head profile with 3-1/2" length and 2.333" minimum thread length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial use.