S-92620A289 7/8"-9 x 2 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 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 150,000 PSI tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Optimized torque transmission through the external hex drive design for secure installation and removal
- Enhanced durability with Rockwell C33 hardness, maintaining structural integrity under repeated stress
- Secure fastening performance ensured by Class 2A thread fit and UNC coarse threading for vibration resistance
- Versatile partial threading design allowing for both clamping and alignment functions in assembly applications
- Industry compliance assurance meeting ASME B18.2.1 and SAE J429 standards for quality and reliability
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in demanding industrial environments where high tensile strength and corrosion resistance are critical. The zinc yellow-chromate plated steel construction provides superior protection against environmental degradation, making these UNC coarse thread fasteners ideal for heavy machinery, structural steel connections, and equipment manufacturing. The partial threading design ensures optimal clamp load distribution while the external hex drive facilitates efficient installation in confined spaces. These industrial-grade hex head screws solve critical challenges in applications requiring reliable, high-strength fastening solutions that withstand vibration, heavy loads, and corrosive conditions without compromising performance.
Specification Summary & Compliance
This 7/8"-9 UNC hex head screw features precise Class 2A thread fit tolerances and coarse threading according to UNC standards. Manufactured to meet ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and performance requirements. The fastener is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use in industrial applications while maintaining the highest quality standards for professional use.
