S-92620A641 3/8"-16 x 5" 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 resistance from zinc yellow-chromate plating that extends service life in harsh environments
- Optimized thread engagement with Class 2A thread fit ensuring consistent assembly and vibration resistance
- Maximum thread coverage through full threading along the 5" length for enhanced grip and load distribution
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance
- Enhanced durability with Rockwell C33 hardness that maintains structural integrity under repeated stress
- Efficient installation through external hex drive design allowing for high-torque application with standard tools
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions where structural integrity cannot be compromised. The combination of 150,000 psi tensile strength and Rockwell C33 hardness makes them ideal for heavy machinery, construction equipment, and automotive assemblies subjected to extreme vibrations and dynamic loads. The zinc yellow-chromate plating provides superior corrosion protection in outdoor or chemically aggressive environments, while the 3/8"-16 UNC coarse thread ensures rapid installation and reliable performance in both soft and hard materials. These fully threaded steel fasteners maintain consistent clamping force across the entire 5" length, preventing joint failure in critical structural connections.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading for optimal performance. These hex head screws comply with ASME B18.2.1 and SAE J429 standards, ensuring dimensional accuracy and mechanical properties. The external hex drive configuration (9/16" head width) accommodates standard wrenching tools, while the right-hand thread direction follows conventional installation practices. Material composition and manufacturing processes adhere to industry specifications for Grade 8 strength classification with verified mechanical properties.
