S-90031A117 Length 1 1/4" Wood Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for long-lasting performance in various environments
• Superior thread engagement through thread forming technology that creates stronger, more secure connections in wood
• Clean, flush installation with standard flat head profile and 82° countersink angle for professional finishing
• Optimized for both hardwood and softwood with specific drill bit size recommendations (1/16" for hardwood, 3/64" for softwood)
• Secure driving control with No. 1 Phillips drive that minimizes cam-out and provides reliable torque transfer
• Reduced material splitting through pointed tip design and partial threading for controlled penetration
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmental and safety requirements

Professional Applications & Engineering Value

These No. 4 wood screws are engineered to address common fastening challenges in woodworking and construction applications. The zinc-plated steel construction provides essential corrosion protection, extending service life in both interior and exterior environments. The thread forming technology creates stronger, more permanent connections by displacing wood fibers rather than cutting them, resulting in up to 30% higher pull-out resistance compared to traditional thread cutting screws. The 82° countersink angle and flat head profile ensure seamless integration with wood surfaces, eliminating protrusions that could snag or create safety hazards. With specific drill bit recommendations for both hardwood and softwood applications, these screws prevent material splitting while maintaining optimal holding power, making them ideal for furniture assembly, cabinetry, decking, and general construction projects where reliability and professional finish are paramount.

Specification Summary & Compliance

This No. 4 x 1-1/4" wood screw features inch system measurements with precision threading at 22 threads per inch and right-hand thread direction. The screw maintains standard dimensional tolerances with a head diameter of 0.225" and minimum thread length of 0.83". Manufacturing compliance includes adherence to RoHS 3 (2015/863/EU) standards for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and workplace safety compliance. The thread forming tapping method and partially threaded shank design follow industry best practices for wood fastening applications.