S-91247A816 5/8"-11 x 5 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 for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in various industrial environments
- Optimized thread engagement with Class 2A thread fit ensuring precise assembly and vibration resistance
- Enhanced durability from Rockwell C25 hardness, maintaining structural integrity under repeated stress
- Efficient installation with external hex drive design providing secure tool grip and torque transmission
- Versatile partial threading allowing both clamping and unthreaded shank functions in structural connections
- Regulatory compliance assurance meeting ASME B18.2.1 and SAE J429 standards for quality and safety
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for heavy-duty assembly challenges where high tensile strength and reliable fastening are paramount. The 5/8"-11 UNC coarse thread configuration provides excellent engagement in steel structures, machinery bases, and construction applications, while the zinc plated finish protects against environmental corrosion in industrial settings. The partially threaded design allows for both secure clamping and structural alignment functions, making it ideal for applications requiring both precise positioning and high clamping force. Engineered to withstand substantial static and dynamic loads, this industrial-grade fastener maintains integrity in demanding environments from manufacturing equipment to infrastructure projects.
Specification Summary & Compliance
This fastener features Class 2A thread fit per UNC standards with precise 5/8"-11 coarse thread dimensions and 5 1/2" length. Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications, it ensures dimensional accuracy and mechanical performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting current industry standards for restricted substances.
