S-92865A647 3/8"-16 x 5 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial assemblies
• Superior corrosion resistance through zinc plating, extending service life in harsh environments
• Reliable thread engagement with Class 2A coarse UNC threads for faster installation and vibration resistance
• Optimized torque transmission via external hex drive and 9/16" head width for secure tightening
• Consistent mechanical performance ensured by Grade 5 steel and Rockwell C25 hardness
• Full-length threading for maximum grip across the entire 5 1/2" length in thick materials
• Regulatory compliance with RoHS 3 and REACH, meeting global environmental standards

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this Grade 5 steel hex head screw combines high tensile strength and zinc plating to address common failure points in machinery, structural frames, and heavy equipment. The coarse UNC thread and Class 2A fit prevent cross-threading while maintaining rapid assembly in production lines. Its fully threaded design ensures uniform stress distribution, reducing the risk of joint loosening under dynamic loads. Compliant with ASME B18.2.1 and SAE J429, it delivers predictable performance in automotive, construction, and manufacturing sectors where reliability is critical.

Specification Summary & Compliance

This fastener maintains Class 2A thread tolerances per UNC standards with a 3/8"-16 thread size and 5 1/2" length. Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications, it is verified for RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to international safety and environmental regulations.