S-90201A446 1/2"-13 x 5" 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 heavy-duty and high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc yellow-chromate plating extends service life in harsh industrial environments, minimizing maintenance needs.
- High hardness rating (Rockwell C38) provides excellent wear resistance and durability under repetitive loading conditions.
- Coarse UNC threading with Class 2A fit allows for quick assembly and secure fastening, improving installation efficiency.
- External hex drive design offers easy tool engagement and high torque capability for straightforward installation and removal.
- Partial threading provides optimal grip and clamping force where needed, enhancing joint stability in structural applications.
- Full compliance with RoHS 3 and REACH ensures environmental safety and meets international regulatory standards for industrial use.
Professional Applications & Engineering Value
This Grade 9 hex head screw is engineered to address critical challenges in demanding sectors such as construction, heavy machinery, and infrastructure projects. Made from high-strength steel and finished with zinc yellow-chromate plating, it combats corrosion and wear in outdoor or chemically aggressive settings. The 1/2"-13 UNC coarse thread and Class 2A thread fit ensure precise engagement and vibration resistance, reducing loosening in dynamic loads. With a partially threaded design, it concentrates clamping force effectively, making it ideal for bolted connections in structural steel, equipment frames, and industrial assemblies where reliability and longevity are paramount.
Specification Summary & Compliance
This fastener adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It meets Grade 9 strength classification, supporting tensile loads up to 180,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial markets.
