S-90602A239 1/2"-13 x 3 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 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
- Precise Class 3A thread fit ensures secure fastening with minimal vibration loosening in critical assemblies
- Integrated flange design eliminates the need for separate washers, reducing installation time and component count
- Grade 8 certification guarantees consistent mechanical properties and hardness (Rockwell C32) for industrial reliability
- Coarse UNC threading enables quick assembly and disassembly while maintaining strong holding power
- External hex drive compatibility with standard tools for straightforward installation and maintenance
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, 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 harsh environments, while the partially threaded design with integrated flange offers optimal clamping force distribution. These 1/2"-13 UNC coarse thread fasteners are specifically designed for structural connections, machinery assembly, and equipment manufacturing where 150,000 psi tensile strength and Rockwell C32 hardness are critical for maintaining joint integrity under extreme loads and vibration conditions.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread fit tolerances with UNC coarse thread spacing (1/2"-13). These partially threaded hex head screws feature a minimum thread length of 1 1/4" and overall length of 3 1/2". Fully compliant with IFI 111 specifications and SAE J429 standards for Grade 8 fasteners, ensuring consistent quality and performance in industrial applications. The zinc yellow-chromate plating meets industry standards for corrosion protection while maintaining dimensional accuracy throughout the manufacturing process.
