S-92620A813 5/8"-11 x 6" 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
- Maximum load-bearing capacity with 150,000 psi tensile strength for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating in demanding environments
- Enhanced durability with Rockwell C33 hardness to withstand vibration and impact
- Optimized thread engagement through UNC coarse threading for faster assembly in various materials
- Precise torque transmission via external hex drive design for secure installation
- Reliable performance meeting ASME B18.2.1 and SAE J429 specifications for industrial applications
- Full-threaded design ensuring consistent clamping force along the entire 6" length
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment where failure is not an option. The steel construction with Rockwell C33 hardness provides the necessary toughness to resist shear forces and vibration loosening, while the zinc yellow-chromate plating creates a protective barrier against rust and chemical exposure in harsh operating conditions. The 5/8"-11 UNC coarse thread configuration ensures rapid installation and superior holding power in both metallic and composite materials, making these fully threaded bolts ideal for applications requiring uniform stress distribution across the entire fastener length.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances for consistent performance, these hex head screws comply with ASME B18.2.1 and SAE J429 specifications governing dimensional accuracy and mechanical properties. The right-hand UNC thread with coarse spacing follows standardized inch system measurements, while the external hex drive design (15/16" head width, 27/64" head height) ensures compatibility with standard industrial tools. These fasteners meet industry requirements for heavy-duty applications where Grade 8 strength classification and precise threading are essential for safety and reliability.
