S-90201A644 3/4"-10 x 2 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 the most demanding industrial applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the zinc yellow-chromate plating extends service life and maintains integrity in harsh environments.
- High hardness rating (Rockwell C38) provides excellent wear resistance and durability under heavy loads and vibration.
- Full UNC coarse threading offers faster installation and superior holding power in a wide range of materials.
- Precise Class 2A thread fit ensures easy assembly and consistent performance with standard nuts and tapped holes.
- External hex drive design allows for high torque application with common tools, speeding up installation and maintenance.
- Compliance with RoHS 3 and REACH guarantees environmental safety and regulatory acceptance for global industrial use.
Professional Applications & Engineering Value
Engineered for heavy-duty applications, this Grade 9 hex head screw delivers unmatched reliability in construction, machinery assembly, and structural frameworks. The steel material combined with a zinc yellow-chromate plated finish effectively combats corrosion, making it ideal for outdoor or high-moisture environments. Its 3/4"-10 UNC coarse thread and fully threaded design provide rapid installation and exceptional grip in thick materials, reducing assembly time while enhancing joint integrity. With a tensile strength of 180,000 PSI and Rockwell C38 hardness, it withstands extreme stress and vibration, preventing loosening and extending the lifespan of critical connections in industrial settings.
Specification Summary & Compliance
This fastener features a Class 2A thread fit for consistent accuracy and easy assembly, adhering to UNC coarse thread standards. It is manufactured to meet Grade 9 strength specifications with precise dimensions including a 2 1/2" length and 1 1/8" head width. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for environmentally conscious industrial procurement.
