S-90201A433 1/2"-13 x 3" Extreme-Strength Grade 9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 180,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Optimized installation efficiency through UNC coarse threading and Class 2A fit for faster assembly with reduced cross-threading risk
• Enhanced torque transmission with 3/4" hex head design that prevents tool slippage during high-torque applications
• Precise clamping control achieved through partial threading that concentrates engagement where needed most
• Consistent mechanical properties maintained via Rockwell C38 hardness for reliable performance across multiple installations
• Environmental compliance assurance with RoHS 3 and REACH compliance for global regulatory acceptance

Professional Applications & Engineering Value

These Grade 9 hex head screws deliver critical engineering solutions for heavy-duty industrial applications where failure is not an option. The zinc yellow-chromate plated steel construction provides superior corrosion protection in manufacturing environments exposed to moisture, chemicals, and outdoor elements. The UNC coarse thread configuration ensures rapid installation in structural steel, machinery frames, and equipment bases where vibration resistance is paramount. With partial threading concentrating the fastener's gripping power, these screws prevent joint loosening while maintaining 180,000 PSI tensile strength for critical connections in construction, transportation, and heavy equipment assemblies. The external hex drive and substantial 3/4" head width accommodate high-torque tools for secure installations without stripping or deformation.

Specification Summary & Compliance

This 1/2"-13 x 3" hex head screw features precision Class 2A thread fit tolerances with UNC coarse thread spacing and right-hand thread direction. Manufactured to Grade 9 strength classification with verified Rockwell C38 hardness and 180,000 PSI tensile strength. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring unrestricted use in global industrial markets.