S-91268A728 9/16"-12 x 2" 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 demanding industrial applications
- Superior durability achieved through Grade 8 steel construction and Rockwell C33 hardness rating
- Reliable fastening performance with Class 2A thread fit ensuring precise engagement and vibration resistance
- Optimized installation efficiency through external hex drive design and 13/16" head width for secure tool engagement
- Enhanced structural stability with partial threading and 1 3/8" minimum thread length for controlled clamping force
- Wide compatibility with 9/16"-12 UNC coarse threads suitable for various industrial components and assemblies
- Regulatory compliance assurance meeting ASME B18.2.1, SAE J429 standards and environmental regulations
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance in demanding environments. The 9/16"-12 UNC coarse thread configuration provides superior holding power in structural assemblies, machinery, and equipment where vibration resistance is critical. The partial threading design ensures optimal stress distribution, preventing thread stripping while maintaining 150,000 psi tensile strength under extreme loads. The external hex drive and substantial 13/16" head width enable high-torque installation without slippage, making them ideal for construction, manufacturing, and heavy equipment maintenance where reliability cannot be compromised.
Specification Summary & Compliance
This heavy-duty hex head screw features precise Class 2A thread fit with 9/16"-12 UNC coarse threading and right-hand thread direction. Manufactured to ASME B18.2.1 and SAE J429 specifications, it ensures dimensional accuracy and performance reliability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for safe and sustainable industrial use.
