S-90201A423 1/2"-13 x 1 3/4" 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 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 repetitive loads.
- Full threading with Class 2A fit offers consistent engagement and easier assembly while maintaining precision.
- External hex drive design allows for high torque application with standard tools, improving installation efficiency.
- Coarse UNC thread pattern enables quick assembly and reduced cross-threading in demanding conditions.
- Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards for industrial use.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 9 hex head screws deliver unmatched reliability in construction, machinery, and structural assemblies. The zinc yellow-chromate plated steel finish provides a robust barrier against corrosion, making them ideal for outdoor or humid environments. With coarse UNC threading and Class 2A fit, these screws ensure secure fastening in materials where vibration resistance is critical. The external hex drive facilitates efficient installation with common tools, reducing labor time while maintaining 180,000 psi tensile strength for load-bearing tasks. This combination of material strength and precise engineering addresses common failure points, offering long-term performance in high-stress fastener scenarios.
Specification Summary & Compliance
This product adheres to UNC coarse thread standards with Class 2A thread fit for consistent dimensional accuracy. Manufactured to meet Grade 9 strength requirements, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are upheld for industrial fastener applications.
