S-92620A805 5/8"-11 x 2 3/4" 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
- Maximum load-bearing capacity with 150,000 psi tensile strength, ideal for structural and heavy machinery applications
- Superior corrosion resistance due to zinc yellow-chromate plating, extending service life in harsh environments
- Reliable fastening performance with UNC coarse threads and Class 2A fit, ensuring easy installation and vibration resistance
- High durability and wear resistance from Grade 8 steel and Rockwell C33 hardness, reducing replacement frequency
- Efficient torque application via external hex drive and 15/16" head width, enabling quick assembly with standard tools
- Full-threaded design for consistent grip along the entire 2 3/4" length, enhancing joint stability
- Compliance with industry standards (ASME B18.2.1/SAE J429), guaranteeing interchangeability and safety in regulated projects
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in construction, machinery assembly, and infrastructure projects. The steel construction combined with zinc yellow-chromate plating provides robust protection against rust and chemical exposure, making it suitable for outdoor or high-moisture environments. Its UNC coarse threading and Class 2A thread fit facilitate quick installation while maintaining tight tolerances, reducing assembly time and minimizing loosening under dynamic loads. With a fully threaded 2 3/4" length, it ensures uniform stress distribution, preventing joint failure in high-vibration settings like automotive frames or structural steel connections.
Specification Summary & Compliance
This fastener adheres to Class 2A thread tolerance for consistent fit and meets ASME B18.2.1 and SAE J429 specifications. It features 5/8"-11 UNC coarse threads, a Rockwell C33 hardness, and is manufactured from high-strength steel with zinc yellow-chromate plating for enhanced durability. The product complies with industry standards for dimensional accuracy and material properties, ensuring reliability in regulated applications.
