S-92620A796 5/8"-11 x 1 1/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With a 150,000 psi tensile rating, this screw withstands extreme loads and vibrations in demanding industrial environments.
• Superior Corrosion Resistance – The zinc yellow-chromate plating provides a durable barrier against rust and environmental degradation, extending service life.
• High Hardness & Durability – Rockwell C33 hardness ensures the fastener maintains its integrity under high stress and repeated use without deforming.
• Reliable Thread Engagement – Fully threaded 5/8"-11 UNC coarse thread design offers excellent grip and faster installation in coarse-grained materials.
• Precision Thread Fit – Class 2A thread fit guarantees consistent, secure fastening with standard nuts and tapped holes, reducing assembly errors.
• Heavy-Duty Grade 8 Rating – Meets SAE J429 Grade 8 standards, making it ideal for critical applications where failure is not an option.
• Easy Installation & Removal – External hex drive and hex head design allow for high torque application with common tools, speeding up maintenance and assembly.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address common industrial challenges such as joint failure, corrosion-induced weakening, and assembly inefficiencies. The steel construction combined with zinc yellow-chromate plating ensures long-term performance in harsh conditions, from machinery frames to structural supports. The 5/8"-11 UNC coarse thread and fully threaded design provide maximum holding power in wood, metal, and composite materials, reducing the risk of loosening under dynamic loads. By integrating high tensile strength and corrosion resistance, this fastener is a reliable choice for automotive, construction, and heavy equipment applications, where safety and durability are paramount.

Specification Summary & Compliance

This hex head screw features a Class 2A thread fit for consistent dimensional accuracy and complies with ASME B18.2.1 and SAE J429 standards. It is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets environmental and safety regulations for industrial use.