S-92620A855 3/4"-10 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 critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and secure fastening
- Maximum hardness durability at Rockwell C33 to withstand high-stress conditions and prevent deformation
- Full-thread design efficiency providing consistent clamping force along the entire 5" length
- Heavy-duty external hex drive enabling high-torque installation with standard tools
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for reliable performance
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance in heavy machinery, structural steel connections, and industrial equipment where high tensile strength and vibration resistance are paramount. The steel construction with Rockwell C33 hardness maintains integrity under extreme loads, while the zinc yellow-chromate plating provides superior corrosion protection in demanding environments. The coarse UNC threading with Class 2A fit ensures rapid installation and reliable engagement in both through-holes and tapped applications, reducing assembly time while maintaining exceptional clamping force across the full 5" length. These fully threaded heavy-duty screws are engineered to prevent loosening under dynamic loads, making them ideal for construction, manufacturing, and transportation applications where failure is not an option.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (3/4"-10) and right-hand thread direction. Compliant with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Features Grade 8 strength classification with verified 150,000 psi tensile strength and Rockwell C33 hardness. The zinc yellow-chromate plating provides corrosion resistance while maintaining the fastener's structural integrity.
