S-91247A694 7/16"-14 x 6 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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 120,000 psi tensile strength, ideal for heavy-duty applications requiring reliable performance under stress.
- Enhanced corrosion resistance from zinc plating, extending service life in industrial environments and reducing maintenance frequency.
- Superior hardness and durability with Rockwell C25 rating, minimizing wear and deformation during repeated use.
- Optimized coarse threading (UNC) ensures faster installation and secure grip in various materials, improving assembly efficiency.
- Class 2A thread fit provides consistent, precise engagement for smooth installation and reduced cross-threading risks.
- Partially threaded design allows for controlled clamping force and vibration resistance in structural joints.
- External hex drive compatibility enables easy tightening with standard tools, speeding up maintenance and assembly processes.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address critical industrial challenges, such as joint failure under high vibration and corrosive conditions. The zinc plating offers a protective barrier against rust, making it suitable for outdoor machinery, construction frameworks, and automotive assemblies where environmental exposure is a concern. Its coarse UNC thread and partial threading design ensure rapid installation and reliable retention in coarse-grained materials like wood or cast iron, reducing assembly time while maintaining structural integrity. With a 6 1/2" length and external hex drive, it provides ample reach and easy torque application for heavy-duty fastening in equipment manufacturing, infrastructure projects, and repair operations, delivering long-term performance without frequent replacements.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit for consistent dimensional accuracy and smooth assembly. It complies with ASME B18.2.1 and SAE J429 standards, ensuring manufacturing precision and mechanical reliability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material compliance for global industrial use.
