S-92620A144 5/8"-11 x 5 3/4" 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 corrosion protection through zinc yellow-chromate plating that extends service life in harsh environments
- Optimized torque transmission with external hex drive design for secure installation and removal
- Enhanced thread engagement with Class 2A thread fit ensuring precise assembly and vibration resistance
- Reduced installation time through coarse UNC threading that enables faster driving and alignment
- Partial threading design providing both gripping strength and clearance where needed
- Industry compliance assurance meeting ASME B18.2.1 and SAE J429 standards for quality and reliability
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance where structural integrity cannot be compromised. The 150,000 psi tensile strength and Rockwell C33 hardness make them ideal for heavy machinery, construction equipment, and industrial assemblies requiring high-strength fastening solutions. The zinc yellow-chromate plating provides superior corrosion resistance in demanding environments, while the 5/8"-11 UNC coarse threading ensures rapid installation and reliable clamping force. The external hex drive accommodates standard tools for efficient maintenance and disassembly cycles, making these partially threaded fasteners essential components in engineering applications where vibration resistance and long-term durability are paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse threading specifications. These steel fasteners comply with ASME B18.2.1 and SAE J429 Grade 8 requirements, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial components.
