S-92620A317 1 1/8"-7 x 5 1/2" 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 industrial applications
- Superior corrosion resistance provided by zinc yellow-chromate plating in harsh environments
- Reliable thread engagement through UNC coarse threading that resists vibration loosening
- Optimized torque transmission with external hex drive design for secure installation
- Precise mechanical performance ensured by Rockwell C33 hardness and Class 2A thread fit
- Reduced assembly weight through partial threading while maintaining full strength requirements
- Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3 and REACH standards
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance in construction equipment, machinery assembly, and structural frameworks. The 1 1/8"-7 UNC coarse threading provides superior resistance to vibration-induced loosening, while the zinc yellow-chromate plating creates a durable barrier against corrosion in demanding environments. With 150,000 psi tensile strength and Rockwell C33 hardness, these fasteners maintain structural integrity under extreme loads. The external hex drive design ensures efficient torque application during installation, reducing assembly time while providing reliable clamping force for critical joints in industrial machinery and equipment.
Specification Summary & Compliance
This Grade 8 hex head screw features precise Class 2A thread fit with 1 1/8"-7 UNC coarse threading and partial threading configuration. Manufactured to ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical performance. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material compliance standards.
