S-90201A536 5/8"-11 x 2 1/2" Extreme-Strength Grade 9 Steel Hex Head Screws
Extreme-Strength Grade 9 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 tensile strength of 180,000 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 C38) provides excellent wear resistance and durability under heavy loads.
- Precise Class 2A thread fit allows for easy assembly while maintaining secure fastening and vibration resistance.
- Coarse UNC threading offers quick installation and superior grip in a variety of materials.
- Partially threaded design enables optimal clamping force distribution for enhanced joint stability.
- Compliance with RoHS 3 and REACH ensures environmental safety and regulatory acceptance for global projects.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this Grade 9 hex head screw combines high-strength steel with a zinc yellow-chromate finish to combat corrosion in outdoor or chemically exposed environments. The 5/8"-11 UNC coarse thread and partial threading provide rapid installation and robust clamping in structural steel, heavy machinery, and construction assemblies. Its 180,000 PSI tensile strength and Rockwell C38 hardness address common issues like bolt stretching or shear failure, making it ideal for heavy-duty applications where reliability is critical. By integrating precise Class 2A thread fit, it minimizes loosening from vibrations, ensuring long-term operational safety.
Specification Summary & Compliance
This fastener adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances. Manufactured to deliver Grade 9 strength with a tensile rating of 180,000 PSI, it is suitable for rigorous industrial use where high performance and regulatory adherence are required.
