S-90602A227 3/8"-16 x 2 1/2" 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 tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments.
- High hardness rating (Rockwell C32) provides excellent wear resistance and maintains thread integrity under heavy loads.
- Precise Class 3A thread fit guarantees secure fastening with minimal risk of loosening in vibration-prone settings.
- Integrated flange design eliminates the need for separate washers, simplifying installation and providing a larger bearing surface.
- Coarse UNC threading allows for quicker assembly and better performance in materials prone to stripping.
- External hex drive offers high torque capability for secure tightening with standard tools.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers critical reliability where failure is not an option. The zinc yellow-chromate plated steel construction provides robust protection against corrosion, making it ideal for machinery, structural assemblies, and outdoor equipment exposed to moisture and chemicals. Its partially threaded design with a flange concentrates clamping force precisely where needed, preventing joint separation under dynamic loads. The 3/8"-16 UNC coarse thread ensures rapid installation and superior grip in soft materials or when alignment is challenging. By meeting SAE J429 specifications, it offers consistent performance that engineers trust for critical connections in construction, automotive, and manufacturing sectors.
Specification Summary & Compliance
This fastener features a 3/8"-16 UNC thread with Class 3A fit for precise tolerance, ensuring secure engagement. It complies with SAE J429 (referenced in IFI 111) for mechanical properties and Grade 8 strength classification. The zinc yellow-chromate plating meets common industry standards for corrosion protection, suitable for environments requiring durable, long-lasting fasteners without specific RoHS or REACH restrictions noted in provided data.
