S-92620A916 7/8"-9 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 tensile strength of 150,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh environments, minimizing maintenance and replacement costs.
- High hardness rating (Rockwell C33) provides excellent wear resistance and durability under heavy loads and vibration.
- Coarse UNC threading allows for faster installation and better grip in softer materials or where debris is present.
- Class 2A thread fit ensures consistent, easy assembly with standard nuts while maintaining secure fastening.
- Fully threaded design offers maximum grip length and flexibility in various material thicknesses.
- External hex drive enables high-torque application with common tools, speeding up assembly and disassembly processes.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and structural assemblies where vibration and dynamic loads are common. The steel material combined with zinc yellow-chromate plating provides a robust barrier against rust and chemical exposure, ideal for outdoor or corrosive industrial settings. Its 7/8"-9 UNC coarse thread ensures rapid installation and reliable holding power in both metal and composite materials, reducing assembly time while maintaining high tensile strength integrity. By meeting ASME B18.2.1 and SAE J429 specifications, it guarantees interoperability and safety in demanding applications, from equipment manufacturing to infrastructure projects.
Specification Summary & Compliance
This fastener features a Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy for consistent performance. It complies with ASME B18.2.1 and SAE J429 specifications, confirming adherence to recognized industrial manufacturing and material standards. The zinc yellow-chromate plating meets common corrosion resistance requirements, while the Grade 8 classification verifies its high-strength properties, including a tensile strength of 150,000 psi and Rockwell C33 hardness, suitable for rigorous engineering applications.
