S-90602A262 5/8"-11 x 3" 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
- Maximum load-bearing capacity with 150,000 PSI tensile strength for critical heavy-duty applications
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Enhanced installation efficiency with external hex drive and coarse UNC threads for faster assembly
- Reduced loosening risk due to flanged design that provides wider bearing surface and better load distribution
- Precise thread engagement with Class 2A fit ensuring consistent performance and reliability
- Optimized strength-to-weight ratio through Rockwell C32 hardness and Grade 8 certification
- Partial threading design allows for both clamping force and unthreaded shank strength where needed
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The zinc yellow-chromate plated steel construction provides superior protection against corrosion in manufacturing plants, construction sites, and outdoor equipment. The 5/8"-11 UNC coarse thread design ensures rapid installation while maintaining holding power, while the partial threading and flanged head prevent joint loosening under vibration. These heavy-duty screws are specifically designed for structural connections, heavy machinery assembly, and high-stress applications where 150,000 PSI tensile strength and Rockwell C32 hardness are critical for long-term reliability and safety.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit and UNC coarse thread specifications. Fully compliant with IFI 111/SAE J429 requirements for Grade 8 fasteners, ensuring consistent quality and performance. Features precise dimensional control with 5/8"-11 thread size, 3" length, and 15/16" head width for proper tool engagement. The zinc yellow-chromate plating meets industry standards for corrosion protection while maintaining the Rockwell C32 hardness and mechanical properties required for high-strength applications.
