S-92620A782 9/16"-18 x 2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments.
• Precision Class 2A thread fit with UNF fine pitch provides secure, vibration-resistant connections for critical assemblies.
• Full threading design offers maximum grip and holding power along the entire fastener length.
• High-strength Grade 8 rating and Rockwell C33 hardness deliver durability for heavy-duty mechanical applications.
• External hex drive allows for easy installation and high torque application with standard tools.
• Compliance with ASME, SAE, RoHS 3, and REACH ensures material safety and meets rigorous industrial standards.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to solve critical fastening challenges in demanding environments. The UNF fine pitch thread and Class 2A fit provide superior resistance to loosening under vibration, making it ideal for machinery, automotive, and structural applications. The zinc yellow-chromate plating offers excellent protection against corrosion, extending the lifespan of equipment exposed to moisture or chemicals. With a 150,000 psi tensile strength and full threading, it ensures even load distribution and reliable performance in high-stress assemblies, reducing maintenance needs and downtime.

Specification Summary & Compliance

This fastener features a 9/16"-18 UNF fine thread with Class 2A tolerance for precise fit. It meets ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and performance. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use.