S-90201A324 3/8"-16 x 2 1/4" 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 load-bearing capacity with 180,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Enhanced durability through Rockwell C38 hardness, maintaining structural integrity under repeated use
- Secure fastening with Class 2A thread fit ensuring precise engagement and vibration resistance
- Easy installation and removal via external hex drive design, compatible with standard tools
- Optimized thread engagement with UNC coarse threading for quicker assembly in various materials
- Regulatory compliance meeting RoHS 3 and REACH standards for safe industrial use
Professional Applications & Engineering Value
This Grade 9 hex head screw delivers critical engineering solutions where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction provides superior protection against environmental degradation, while the 3/8"-16 UNC coarse threading ensures rapid installation in structural steel, heavy machinery, and construction applications. The partially threaded design allows for precise clamping force distribution, preventing joint loosening under dynamic loads. With 180,000 psi tensile strength and Rockwell C38 hardness, this fastener maintains integrity in demanding environments including manufacturing equipment, transportation systems, and infrastructure projects where vibration resistance and long-term reliability are essential.
Specification Summary & Compliance
This hex head screw features 3/8"-16 UNC coarse threading with Class 2A thread fit for consistent dimensional accuracy. The fastener meets Grade 9 strength classification with verified 180,000 psi tensile strength and Rockwell C38 hardness. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications.
