S-90201A670 3/4"-10 x 7" 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 demanding applications
- Superior corrosion resistance through zinc yellow-chromate plating that extends service life in harsh environments
- Optimized torque transmission with external hex drive design providing secure installation and removal
- Enhanced thread engagement with Class 2A thread fit ensuring precise mating with nuts and threaded components
- Reduced cross-threading risk through UNC coarse threading that facilitates faster assembly in industrial settings
- Controlled fastening precision with partial threading that allows for specific clamp load distribution
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
These Grade 9 hex head screws deliver critical engineering solutions for heavy machinery, structural steel connections, and industrial equipment assembly. The 3/4"-10 UNC coarse thread configuration combined with Rockwell C38 hardness provides exceptional resistance to vibrational loosening and mechanical stress, addressing common failure points in dynamic load environments. The zinc yellow-chromate plating creates a protective barrier against corrosion in outdoor or chemically aggressive settings, while the partial threading design allows engineers to precisely control clamp force distribution. These steel fasteners are specifically engineered to maintain joint integrity in construction, manufacturing, and infrastructure applications where 180,000 psi tensile strength is required for safety-critical connections.
Specification Summary & Compliance
This 7" length hex head screw features 3/4"-10 UNC coarse threads with Class 2A thread fit tolerance for precise mating compatibility. The fastener maintains Grade 9 strength classification with verified Rockwell C38 hardness and 180,000 psi tensile strength. Manufacturing and material composition fully comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring responsible production standards for industrial and commercial applications.
