S-92620A294 1"-8 x 5 1/4" 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
- Maximum Load Capacity - Grade 8 classification with 150,000 psi tensile strength ensures reliable performance in high-stress applications
- Superior Corrosion Protection - Zinc Yellow-Chromate plating provides enhanced resistance to rust and environmental degradation
- Optimized Thread Engagement - Class 2A thread fit with UNC coarse threading offers excellent assembly characteristics and vibration resistance
- Enhanced Durability - Rockwell C33 hardness rating maintains structural integrity under repeated loading conditions
- Secure Fastening Control - External hex drive with 1 1/2" head width delivers superior torque application and installation precision
- Versatile Application Range - Partially threaded design with 2 1/2" minimum thread length provides flexibility for various material thicknesses
- Industry Compliance Assurance - Meets ASME B18.2.1 and SAE J429 specifications for guaranteed quality and performance standards
Professional Applications & Engineering Value
These Grade 8 hex head screws with 1"-8 UNC coarse threading are engineered to address critical challenges in heavy machinery, structural steel connections, and industrial equipment assembly. The zinc yellow-chromate plated surface treatment provides exceptional corrosion resistance in harsh environments, while the Rockwell C33 hardness ensures the fastener maintains its structural integrity under extreme vibration and dynamic loading conditions. The external hex drive design allows for high-torque installation, making these steel fasteners ideal for applications requiring reliable, high-strength connections in construction, manufacturing, and automotive industries where failure is not an option.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 1"-8 UNC coarse thread spacing and 5 1/4" overall length. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, providing assurance of material safety and regulatory adherence for industrial applications worldwide.
