S-92620A824 5/8"-18 x 1 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 and Grade 8 classification for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding industrial environments
• Precise thread engagement with UNF fine threading and Class 2A fit ensuring secure fastening and vibration resistance
• Maximum thread utilization through fully threaded design for consistent clamping force along the entire fastener length
• Optimized installation efficiency with external hex drive and standard 15/16" head width for common wrench compatibility
• Enhanced mechanical properties featuring Rockwell C33 hardness for excellent wear resistance and durability
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability and performance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance in construction equipment, machinery assembly, and structural frameworks where high tensile strength and reliable fastening are critical. The 5/8"-18 UNF fine threading provides superior resistance to vibrational loosening compared to coarse threads, while the zinc yellow-chromate plating offers enhanced corrosion protection in harsh environments. The fully threaded design ensures uniform stress distribution and maximum grip length, making these steel fasteners ideal for applications requiring consistent clamping force. With external hex drive compatibility and standardized dimensions, they enable efficient installation and maintenance across various industrial sectors.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit tolerances with 5/8"-18 UNF fine threading in right-hand direction. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical performance. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications while maintaining 150,000 psi tensile strength and Rockwell C33 hardness properties.