S-92620A794 5/8"-11 x 1" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with Grade 8 classification and 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 demanding industrial environments
• Optimized thread engagement through UNC coarse threading and Class 2A fit, ensuring secure fastening and vibration resistance
• Maximum driving torque capacity with external hex drive and 15/16" head width for efficient installation and removal
• Full-threaded design offering consistent clamping force along the entire 1" length for uniform stress distribution
• Enhanced durability from Rockwell C33 hardness, maintaining structural integrity under repeated loading conditions
• Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where high tensile strength and reliable fastening are paramount. The steel construction with Rockwell C33 hardness ensures dimensional stability under extreme loads, while the zinc yellow-chromate plating provides essential corrosion protection in harsh operating environments. The UNC coarse thread configuration with Class 2A fit enables rapid installation and superior vibration resistance, making these fully threaded screws ideal for applications requiring consistent clamping force across the entire fastener length. Engineered to ASME B18.2.1 specifications, these 5/8"-11 hex head bolts offer predictable performance in critical joints where failure is not an option.

Specification Summary & Compliance

This Grade 8 hex head screw features precise Class 2A thread fit tolerances with UNC 5/8"-11 coarse threading and right-hand thread direction. Manufactured to ASME B18.2.1 specifications and SAE J429 standards for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in industrial applications.