S-92620A810 5/8"-11 x 4 1/2" 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 for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating in harsh industrial environments
- Enhanced durability with Rockwell C33 hardness to withstand repeated stress and vibration
- Reliable thread engagement with Class 2A thread fit ensuring precise assembly and reduced cross-threading risk
- Optimized for heavy-duty use through full threading and coarse UNC pattern for faster installation in tough materials
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance
- Secure external hex drive providing high torque transmission during installation and removal
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional performance in construction, machinery assembly, and heavy equipment manufacturing. The coarse UNC thread pattern ensures rapid installation in steel frameworks and cast components, while the zinc yellow-chromate plating provides critical corrosion protection in outdoor or high-moisture environments. With full threading along the 4½" length, these high tensile strength bolts maintain consistent clamping force across joints subject to vibration and dynamic loads. The external hex drive design allows for high-torque application using standard tools, making them ideal for maintenance and production lines where reliability and speed are paramount.
Specification Summary & Compliance
This 5/8"-11 UNC hex head screw maintains Class 2A thread fit tolerances for precise engagement and meets ASME B18.2.1 dimensional requirements. Manufactured to SAE J429 Grade 8 standards with 150,000 psi tensile strength and Rockwell C33 hardness, these steel fasteners comply with industry specifications for heavy-duty applications. The zinc yellow-chromate finish provides corrosion resistance while maintaining RoHS and REACH compliance for environmental safety.
