S-92620A792 5/8"-11 x 3/4" 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 provided by zinc yellow-chromate plating, extending service life in harsh environments
• Enhanced durability from Rockwell C33 hardness, maintaining structural integrity under repeated use
• Optimized torque transmission through the external hex drive design for secure installation and removal
• Reliable thread engagement with Class 2A thread fit ensuring consistent fastening in industrial assemblies
• Full-threaded design offering maximum grip length and uniform stress distribution along the entire fastener
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The 5/8"-11 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling rapid installation in heavy machinery, structural steel connections, and equipment manufacturing. The zinc yellow-chromate plating creates a protective barrier against oxidation and chemical exposure, significantly extending service life in outdoor applications or corrosive atmospheres. With fully threaded design ensuring maximum contact surface, these fasteners distribute clamping forces evenly across joined materials, preventing stress concentration points that could lead to material fatigue. The combination of 150,000 psi tensile strength and Rockwell C33 hardness makes these screws ideal for critical applications in construction, automotive assembly, and industrial equipment where structural integrity is paramount.

Specification Summary & Compliance

This 5/8"-11 UNC hex head screw features Class 2A thread fit tolerance for precise engagement and maintains dimensional accuracy per ASME B18.2.1 and SAE J429 specifications. The fastener is manufactured from high-strength steel with zinc yellow-chromate plating surface treatment and complies with industry standards for mechanical properties and dimensional requirements. The product meets relevant industrial regulations for heavy-duty applications and maintains consistent quality across production batches.