S-92620A608 5/16"-24 x 1 1/4" 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 reliable performance in high-stress industrial environments
- Superior corrosion resistance through zinc yellow-chromate plating that protects against rust in demanding conditions
- Precise thread engagement with UNF fine threads and Class 2A fit ensuring secure fastening and vibration resistance
- Maximum torque transmission via external hex drive design that prevents stripping during installation
- Enhanced durability from Rockwell C33 hardness that maintains structural integrity under repeated stress
- Full-threaded design providing consistent clamping force along the entire 1-1/4" length
- Regulatory compliance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for quality assurance
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions where failure is not an option. The steel construction with zinc yellow-chromate plating provides exceptional corrosion protection in harsh industrial environments, while the UNF fine thread configuration ensures superior vibration resistance in machinery, automotive assemblies, and structural applications. The external hex drive allows for high-torque installation without compromising fastener integrity, making these fully threaded fasteners ideal for heavy-duty equipment, construction projects, and manufacturing applications requiring reliable, long-term fastening solutions that withstand extreme mechanical stress and environmental challenges.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 5/16"-24 UNF fine threads and right-hand threading. Compliant with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and performance reliability. Meets environmental standards including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements, confirming the absence of restricted substances for global industrial applications.
