S-92620A599 5/16"-18 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
- Maximum load-bearing capacity with 150,000 psi tensile strength, ideal for high-stress industrial applications
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Precise thread engagement with Class 2A fit UNC coarse threads, ensuring reliable installation and vibration resistance
- Exceptional durability from Rockwell C33 hardness, maintaining structural integrity under repeated stress
- Optimized torque transmission through external hex drive design, enabling secure tightening with standard tools
- Full-threaded construction providing consistent clamping force along the entire 5" length
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed performance
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional performance in heavy machinery, structural steel connections, and equipment assembly. The 5/16"-18 UNC coarse thread design with Class 2A fit ensures rapid installation and superior vibration resistance, while the zinc yellow-chromate plating provides critical corrosion protection in challenging environments. With 150,000 psi tensile strength and Rockwell C33 hardness, these fully threaded fasteners maintain clamping force under extreme loads, preventing joint failure in critical applications. The external hex drive configuration allows for high-torque installation, making them ideal for construction, manufacturing, and maintenance operations where reliability is paramount.
Specification Summary & Compliance
This 5/16"-18 UNC hex head screw features precise Class 2A thread fit tolerance and coarse thread spacing for optimal performance. Manufactured to meet ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The zinc yellow-chromate plating provides enhanced corrosion resistance while maintaining compliance with industrial standards for heavy-duty fasteners in demanding applications.
