S-91478A642 Length 4 1/2" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for reliable performance in various wood environments
• Superior torque transmission through the external hex head design, allowing for secure installation with standard tools
• Maximum holding power achieved with thread forming technology that creates strong, permanent threads in wood materials
• Optimized load distribution from the partially threaded design, reducing wood splitting while maintaining structural integrity
• Industry-standard compatibility with ASME B18.2.1 specifications ensuring consistent quality and interchangeability
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe, sustainable manufacturing
• Versatile length application with 4-1/2" size providing deep penetration for heavy wood construction projects

Professional Applications & Engineering Value

These heavy-duty wood screws deliver exceptional engineering value through their specialized thread forming design and zinc-plated steel construction. The external hex drive provides superior torque transfer during installation, preventing cam-out issues common in wood fastening applications. The partially threaded configuration ensures optimal performance by concentrating holding power where needed most, while the thread forming technology creates permanent, high-strength connections in wood substrates without pre-drilling requirements. These 3/8"-7 screws are engineered for demanding wood construction, timber framing, and structural applications where vibration resistance and long-term reliability are critical. The combination of right-hand threading and pointed tip facilitates easy starting and smooth installation in various wood densities.

Specification Summary & Compliance

This wood screw features precise dimensional accuracy with 3/8" diameter and 7 threads per inch configuration, manufactured to ASME B18.2.1 standards for consistent quality and performance. The product maintains Class 2A thread tolerances for proper fit and function in wood applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance management. The 4-1/2" length with 2-3/4" minimum thread length provides optimal engagement depth for secure wood fastening applications.