S-90201A525 5/8"-11 x 1 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 industrial applications, reducing the risk of fastener failure.
- Grade 9 classification provides superior mechanical properties, offering enhanced durability and load-bearing capacity for demanding environments.
- Zinc yellow-chromate plating delivers excellent corrosion resistance, extending service life in harsh or outdoor conditions.
- Rockwell C38 hardness maintains structural integrity under heavy loads and repetitive use, minimizing wear and deformation.
- Class 2A thread fit with UNC coarse threading allows for easy assembly and disassembly while ensuring secure fastening in various materials.
- Fully threaded design offers consistent grip and clamping force along the entire length, improving joint stability.
- External hex drive and hex head facilitate quick installation with standard tools, boosting efficiency in assembly lines.
Professional Applications & Engineering Value
This Grade 9 hex head screw is engineered to address critical challenges in heavy-duty industries, such as construction, machinery assembly, and structural frameworks. Its high-strength steel composition and 180,000 PSI tensile strength prevent loosening and failure under dynamic loads, while the zinc yellow-chromate finish combats corrosion in humid or chemically aggressive settings. The 5/8"-11 UNC coarse thread and Class 2A fit ensure precise engagement with nuts or tapped holes, reducing installation time and enhancing reliability. Ideal for applications requiring robust external hex drive fasteners, this screw delivers consistent performance in automotive, agricultural, and industrial equipment, where durability and compliance with safety standards are paramount.
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, ensuring environmental safety and regulatory alignment. Manufactured to Grade 9 specifications, it guarantees high tensile and hardness properties for industrial use.
