S-92620A963 1"-8 x 4 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 protection through zinc yellow-chromate plating that extends service life in harsh environments
• Optimized thread engagement with Class 2A UNC coarse threading ensuring secure fastening and vibration resistance
• Maximum material utilization through fully threaded design providing consistent strength along the entire screw length
• Enhanced installation efficiency with external hex drive and standard 1½" head width for easy tool access and high torque application
• Certified industrial reliability meeting ASME B18.2.1 and SAE J429 specifications for quality assurance in critical applications
• Premium material performance featuring Grade 8 steel with Rockwell C33 hardness for exceptional durability and wear resistance

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering solutions for industrial applications where failure is not an option. The combination of 150,000 PSI tensile strength and Rockwell C33 hardness provides exceptional resistance to shear forces and material deformation in heavy machinery, structural steel connections, and equipment assembly. The zinc yellow-chromate plating offers superior corrosion protection in demanding environments, while the 1"-8 UNC coarse threading with Class 2A fit ensures rapid installation and reliable performance in vibration-prone applications. The fully threaded design maximizes load distribution, making it ideal for construction, manufacturing, and automotive applications requiring high-strength fastening solutions that withstand extreme operational conditions.

Specification Summary & Compliance

This heavy-duty hex head screw features precision 1"-8 UNC coarse threading with Class 2A thread fit for consistent engagement and reliable performance. Manufactured from high-strength steel with Rockwell C33 hardness and 150,000 PSI tensile strength, the fastener complies with ASME B18.2.1 and SAE J429 Grade 8 specifications. The zinc yellow-chromate plating provides enhanced corrosion resistance while maintaining dimensional accuracy throughout the 4½" length. This industrial-grade fastener meets rigorous quality standards for applications requiring exceptional mechanical properties and long-term reliability.