S-92620A811 5/8"-11 x 5" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 PSI tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through zinc yellow-chromate plating that extends service life in harsh environments
• Optimized torque transmission with external hex drive design for secure installation and removal
• Enhanced durability from Rockwell C33 hardness that maintains structural integrity under repeated stress
• Reliable thread engagement with UNC coarse threading that resists loosening in vibrating applications
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance
• Precision manufacturing with Class 2A thread fit ensuring consistent performance and easy assembly

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance where structural integrity cannot be compromised. The combination of 150,000 PSI tensile strength and Rockwell C33 hardness provides exceptional resistance to shear and tensile forces in heavy machinery, construction equipment, and industrial assemblies. The zinc yellow-chromate plating creates a protective barrier against corrosion in outdoor or chemically aggressive environments, significantly extending maintenance intervals. With fully threaded UNC coarse threading and Class 2A fit, these fasteners offer superior vibration resistance and reliable clamping force distribution across the entire 5-inch length. The external hex drive design ensures maximum torque application without stripping, making them ideal for critical connections in structural steel, heavy equipment manufacturing, and industrial maintenance applications where failure is not an option.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. These 5/8"-11 UNC coarse thread fasteners comply with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. The zinc yellow-chromate plating provides corrosion protection while maintaining compliance with industry standards for surface treatments. All materials and manufacturing processes adhere to relevant industrial regulations for quality assurance in demanding applications.