S-92620A347 1 1/2"-6 x 7" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 150,000 psi tensile strength for demanding structural applications
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Reliable thread engagement with Class 2A fit UNC coarse threading for easier assembly and vibration resistance
- Optimized strength-to-weight ratio through Grade 8 steel construction with Rockwell C33 hardness
- Enhanced torque transmission via external hex drive design with 2 1/4" head width
- Controlled thread engagement through partial threading design for precise clamping force distribution
- Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance in heavy machinery, structural steel connections, and industrial equipment where failure is not an option. The zinc yellow-chromate plating provides superior corrosion protection in manufacturing facilities and outdoor applications, significantly reducing maintenance frequency. The coarse UNC threading ensures rapid assembly in thick materials while maintaining vibration resistance, and the partial threading design prevents thread damage during installation. With 150,000 psi tensile strength and Rockwell C33 hardness, these steel hex bolts maintain integrity under extreme loads, making them ideal for construction, mining equipment, and heavy vehicle applications where reliability is paramount.
Specification Summary & Compliance
This 1 1/2"-6 UNC hex head screw features precise Class 2A thread fit with 3 1/2" minimum thread length and 7" overall length. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and restricted substance control.
