S-91247A766 9/16"-12 x 2 1/4" 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 harsh industrial environments
- Optimized thread engagement with Class 2A thread fit ensuring secure fastening and vibration resistance
- Enhanced durability from Rockwell C25 hardness providing excellent wear resistance and structural integrity
- Quick installation with external hex drive design allowing for efficient assembly using standard tools
- Versatile partial threading enabling both clamping and alignment functions in various assembly scenarios
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality and interchangeability
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers exceptional engineering value for industrial applications requiring high-strength fastening solutions. The zinc plated finish provides critical corrosion protection in manufacturing environments, while the 9/16"-12 UNC coarse thread design ensures rapid assembly and superior resistance to vibration loosening. The partially threaded configuration allows for precise clamping force distribution, making it ideal for machinery assembly, structural frameworks, and heavy equipment where 120,000 psi tensile strength is essential. The external hex drive facilitates quick installation with standard tools, reducing assembly time in production lines and maintenance operations.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit tolerance per UNC standards, ensuring precise thread engagement and interchangeability. Manufacturing complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and performance reliability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial use.
