S-90201A366 7/16"-14 x 3" 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
- Maximum load-bearing capacity with 180,000 PSI tensile strength for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating that withstands harsh industrial environments
- Optimized thread engagement with UNC coarse spacing and Class 2A fit ensuring reliable fastening in heavy materials
- Enhanced durability from Rockwell C38 hardness providing excellent wear resistance and reduced thread deformation
- Secure installation with external hex drive design allowing for high torque application and easy removal
- Versatile partial threading enabling precise clamping force control across various material thicknesses
- Regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 9 hex head screws deliver exceptional performance in construction machinery, structural steel connections, and high-vibration equipment. The zinc yellow-chromate plated finish provides superior corrosion protection, significantly extending service life in demanding environments. The 7/16"-14 UNC coarse thread configuration ensures rapid installation and secure fastening in thick materials, while the partial threading design prevents joint loosening under dynamic loads. With 180,000 PSI tensile strength and Rockwell C38 hardness, these screws maintain integrity under extreme pressure, making them ideal for critical connections where failure is not an option. The external hex drive accommodates standard tools for efficient installation and maintenance in confined spaces.
Specification Summary & Compliance
This 3-inch hex head screw features precise Class 2A thread fit with 7/16"-14 UNC coarse spacing and 1 1/8" minimum thread length. Manufactured from high-strength steel with zinc yellow-chromate plating, the fastener meets Grade 9 mechanical properties including 180,000 PSI tensile strength and Rockwell C38 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
