S-92316A725 1/2"-13 x 3 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged 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 demanding applications
- Superior corrosion resistance through black phosphate steel coating, extending service life in harsh environments
- Optimized thread engagement with UNC coarse spacing and Class 2A fit for faster assembly and vibration resistance
- Enhanced driving efficiency through external hex drive design allowing high torque application without stripping
- Integrated flange design eliminates need for separate washers while providing superior load distribution
- Grade 8 certification ensures consistent mechanical properties meeting rigorous industrial standards
- Partially threaded configuration provides optimal grip range while preventing thread damage during installation
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance in construction, machinery assembly, and structural frameworks. The black phosphate coating provides critical corrosion protection in environments where moisture and chemicals are present, significantly reducing maintenance requirements. The UNC coarse thread design ensures rapid installation and superior resistance to vibration loosening, while the flanged head distributes clamping force evenly across joined surfaces. With Rockwell C32 hardness and precise Class 2A thread fit, these fasteners maintain dimensional stability under extreme loads, making them ideal for critical connections in equipment manufacturing and structural steel applications where failure is not an option.
Specification Summary & Compliance
This 1/2"-13 x 3 1/4" hex head screw features UNC coarse threads with Class 2A tolerance for precise fitment. Manufactured to meet IFI 111/SAE J429 specifications for Grade 8 fasteners, ensuring consistent mechanical properties including 150,000 psi tensile strength and Rockwell C32 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications with strict chemical substance restrictions.
