S-91268A384 7/16"-14 x 3 1/2" 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 reliable performance in high-stress applications
- Superior wear resistance due to Rockwell C33 hardness, extending service life in demanding environments
- Optimized thread engagement through 7/16"-14 UNC coarse threading and Class 2A fit for secure, vibration-resistant connections
- Enhanced installation efficiency with external hex drive design allowing high torque application and easy tool access
- Strategic material distribution through partial threading for balanced strength-to-weight ratio in structural applications
- Comprehensive regulatory compliance meeting ASME B18.2.1, RoHS 3, and REACH standards for global industrial acceptance
- Versatile 3½" length providing ample engagement for thick materials and assemblies
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where structural integrity is paramount. The steel construction combined with 150,000 psi tensile strength provides exceptional resistance to mechanical stresses in construction equipment, machinery frames, and structural steel connections. The 7/16"-14 UNC coarse thread design ensures rapid installation and superior holding power in various materials, while the partial threading concentrates strength where needed most. The external hex drive accommodates standard tools for efficient assembly in confined spaces, making these industrial hex bolts ideal for maintenance, manufacturing, and infrastructure projects requiring reliable, high-strength fastening solutions.
Specification Summary & Compliance
This 3½" length hex head screw features precise Class 2A thread fit with 7/16"-14 UNC coarse threading and right-hand thread direction. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 8 standards, ensuring dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
