S-91247A767 9/16"-12 x 2 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel 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 120,000 PSI tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance through zinc plating, extending service life in demanding environments
- Optimized thread engagement with UNC coarse threads ensuring faster assembly and reduced cross-threading risks
- Precise mechanical properties with Rockwell C25 hardness providing excellent wear resistance and durability
- Secure fastening performance through Class 2A thread fit maintaining consistent clamping force
- Enhanced installation efficiency with external hex drive design allowing high-torque application
- Reduced material usage through partial threading while maintaining full strength in critical engagement areas
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver exceptional mechanical performance where structural integrity is paramount. The zinc plated steel construction provides reliable corrosion protection for outdoor equipment, machinery frames, and structural assemblies exposed to harsh environments. The 9/16"-12 UNC coarse thread configuration ensures rapid installation in steel-to-steel connections while minimizing thread stripping risks. With partial threading design, these fasteners concentrate strength where needed most, making them ideal for construction equipment, automotive frames, and industrial machinery requiring precise clamping force distribution. The combination of 120,000 PSI tensile strength and external hex drive enables secure fastening in high-vibration applications where joint integrity is critical.
Specification Summary & Compliance
Manufactured to ASME B18.2.1 specifications meeting SAE J429 Grade 5 requirements, these hex head screws feature Class 2A thread fit for consistent dimensional accuracy. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. With right-hand UNC coarse threads and 2-1/2" length, these inch-system screws maintain precise 9/16"-12 thread specifications for reliable interchangeability in industrial applications.
