S-92620A847 3/4"-10 x 3" 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 applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding environments
- Enhanced durability through Rockwell C33 hardness, maintaining structural integrity under heavy loads
- Optimized torque transmission with external hex drive and 1 1/8" head width for secure installation
- Reliable thread engagement with UNC coarse threading and Class 2A fit, ensuring consistent fastening performance
- Full-length threading for maximum grip and distribution of clamping force along the entire 3" length
- Industry compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where failure is not an option. The combination of high-strength steel construction and zinc yellow-chromate plating addresses common industrial challenges including vibration-induced loosening, environmental corrosion, and extreme load conditions. The UNC coarse thread design provides superior resistance to cross-threading while enabling faster installation in production environments. With fully threaded coverage and external hex drive configuration, these fasteners ensure maximum clamping force distribution and straightforward installation using standard tools, making them ideal for construction, manufacturing, and heavy equipment applications requiring dependable, long-term fastening solutions.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread specification (3/4"-10). Complies with ASME B18.2.1 and SAE J429 Grade 8 standards for dimensional accuracy and mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Features include 1/2" head height, 1 1/8" head width, right-hand thread direction, and full threading along the 3" length.
