S-92316A319 5/16"-18 x 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 a 150,000 PSI tensile strength, ideal for high-stress industrial assemblies.
- Superior corrosion resistance due to the black-phosphate steel coating, extending service life in harsh environments.
- Reliable thread engagement with UNC coarse threads and Class 2A fit, ensuring easy installation and vibration resistance.
- Enhanced fastening stability from the integrated flange, which distributes load and eliminates the need for a separate washer.
- High-strength Grade 8 classification and Rockwell C32 hardness for durability under extreme mechanical demands.
- Secure external hex drive allows for high-torque application with standard tools, reducing slippage risks.
- Compliance with industry standards including IFI 111/SAE J429, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in machinery, construction, and automotive sectors where failure is not an option. The black-phosphate steel construction provides a robust barrier against rust and chemical exposure, while the partially threaded design with UNC coarse threads ensures rapid assembly and secure clamping in materials like steel and cast iron. The flanged head increases bearing surface, reducing point stress and preventing loosening under dynamic loads. With a 150,000 PSI tensile strength and external hex drive, it delivers consistent performance in high-vibration environments, making it a trusted industrial fastener for structural connections and equipment that demands reliability.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including UNC thread with Class 2A fit for consistent tolerance, and meets IFI 111/SAE J429 specifications for Grade 8 fasteners. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are upheld for global supply chain integration.
