S-91247A820 5/8"-11 x 7" 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 for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating that protects against rust in industrial environments
- Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and secure fastening
- Enhanced durability from Rockwell C25 hardness that maintains structural integrity under repeated stress
- Easy installation and removal with external hex drive design providing positive tool engagement
- Versatile partial threading allowing for both clamping and alignment functions in various assemblies
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where structural integrity is paramount. The zinc plated steel construction provides essential corrosion protection in harsh environments, while the 5/8"-11 UNC coarse threading ensures rapid assembly and superior vibration resistance. The partially threaded design offers dual functionality - the threaded section provides secure fastening while the unthreaded shank maintains alignment in structural connections. With external hex drive compatibility, these industrial hex screws enable high-torque installation using standard tools, making them ideal for construction equipment, machinery frames, and structural steel applications where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent performance. Complies with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant requirements. Features right-hand thread direction and coarse thread spacing per UNC specifications for optimal performance in industrial fastening applications.
