S-91478A552 Length 2 1/2" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for long-lasting performance in demanding wood applications
• Enhanced torque transmission through the external hex head design, preventing cam-out and ensuring secure fastening
• Reduced wood splitting with thread forming technology that displaces material rather than removing it
• Optimized pull-out resistance from the 1 3/4" minimum thread length providing maximum holding power in wood
• Easy alignment and penetration with the pointed tip design for quick, accurate screw placement
• Versatile partial threading allowing unthreaded shank to act as a built-in washer for flush surface mounting
• Industry-standard compatibility with 1/4"-10 thread pattern ensuring interchangeability across woodworking projects

Professional Applications & Engineering Value

These 1/4"-10 zinc-plated steel wood screws are engineered to address common wood fastening challenges in construction and industrial applications. The thread forming design eliminates the need for pre-drilling in many wood types, significantly reducing installation time while preventing material splitting. The external hex drive system provides superior torque transmission compared to Phillips or slotted drives, ensuring tight, secure connections that won't strip during high-torque applications. The partial threading configuration allows the unthreaded shank to function as a built-in washer, distributing clamping force evenly across the wood surface. This combination of thread forming technology and hex head design makes these screws ideal for heavy-duty wood construction, furniture manufacturing, and structural wood assemblies where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

These wood screws feature precision 1/4"-10 right-hand threads with standard inch measurements and Class 2A thread tolerances for consistent performance. Manufacturing complies with ASME B18.2.1 specifications ensuring dimensional accuracy and mechanical properties. The products are fully RoHS 3 (2015/863/EU) compliant and meet REACH (EC 1907/2006) requirements for environmental safety and restricted substances. The zinc-plated steel construction provides corrosion protection while maintaining the high tensile strength required for demanding wood fastening applications.