S-92620A928 7/8"-14 x 2 1/2" 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
• Precise thread engagement with Class 2A UNF fine threads ensuring secure fastening and vibration resistance
• Optimal hardness and durability with Rockwell C33 rating, maintaining structural integrity under heavy loads
• Full threading design for maximum grip length and uniform stress distribution across the entire fastener
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality and interchangeability
• Easy installation and removal with external hex drive and standard 1 5/16" head width for common tool compatibility

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The 7/8"-14 UNF fine thread configuration provides superior resistance to loosening under vibration, making them ideal for machinery, structural steel connections, and equipment assembly. The zinc yellow-chromate plating on steel construction creates a robust barrier against corrosion in demanding environments, from manufacturing facilities to outdoor installations. With fully threaded design and Class 2A thread fit, these fasteners ensure maximum thread engagement and precise alignment in critical joints. The combination of 150,000 psi tensile strength and Rockwell C33 hardness provides the structural integrity needed for high-stress applications while maintaining sufficient ductility to prevent brittle failure.

Specification Summary & Compliance

This Grade 8 hex head screw features precision 7/8"-14 UNF fine threads with Class 2A thread fit tolerance for optimal engagement. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict chemical substance control.