S-92620A247 9/16"-18 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 and Rockwell C33 hardness for demanding industrial applications
• Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh environments
• Precise thread engagement with Class 2A UNF fine threads ensuring reliable fastening and vibration resistance
• Optimized installation efficiency featuring external hex drive and 13/16" head width for secure tool engagement
• Enhanced structural stability through partially threaded design that concentrates strength where needed most
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed performance
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable procurement

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 vibration resistance are critical. The zinc yellow-chromate plating provides superior corrosion protection in challenging environments, while the UNF fine threads maintain clamping force under dynamic loads. The partially threaded design ensures maximum grip length where needed, making these steel fasteners ideal for applications requiring precise load distribution and long-term reliability in demanding industrial settings.

Specification Summary & Compliance

Manufactured to exacting Class 2A thread fit tolerances with 9/16"-18 UNF fine threads and 2 1/2" length. Complies with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards for restricted substances.