S-91268A417 7/16"-14 x 6" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior wear resistance due to Rockwell C33 hardness, ensuring extended service life in demanding environments
• Optimized thread engagement with partial threading design for improved clamping force and reduced installation time
• Precise mechanical compatibility through Class 2A thread fit and UNC coarse threads for secure fastening in industrial assemblies
• Enhanced torque transmission via external hex drive and 5/8" head width for efficient installation with standard tools
• Rigorous quality assurance meeting ASME B18.2.1 and SAE J429 standards for consistent dimensional accuracy
• Environmental compliance with RoHS 3 and REACH regulations for safe use across global markets

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where structural integrity is paramount. The 7/16"-14 UNC coarse threading provides excellent resistance to vibration loosening in machinery, construction equipment, and transportation systems. The partial threading design concentrates strength where needed most, preventing thread stripping while maintaining 150,000 psi tensile strength under extreme loads. Manufactured from high-grade steel with external hex drive, these fasteners withstand repetitive disassembly in maintenance operations. Their 6" length and Class 2A thread fit ensure precise alignment in thick material assemblies, making them ideal for structural steel connections, heavy machinery frames, and industrial equipment requiring reliable, high-strength fastening solutions.

Specification Summary & Compliance

This hex head screw maintains precision Class 2A thread fit with 7/16"-14 UNC coarse threads in right-hand direction. Manufacturing complies with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional consistency across production lots. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical safety, making it suitable for international industrial applications requiring verified environmental standards.