S-92620A643 3/8"-16 x 6" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with 150,000 psi rating ensures reliable performance in high-stress applications
• Superior corrosion resistance through zinc yellow-chromate plating extends service life in demanding environments
• Precision Class 2A thread fit provides consistent engagement and reduces installation issues
• Grade 8 certification guarantees high hardness (Rockwell C33) and durability for heavy-duty use
• Full UNC coarse threading enables faster assembly and better debris clearance
• External hex drive design allows for high torque application with standard tools
• Industry standard compliance with ASME B18.2.1 and SAE J429 ensures quality and interchangeability

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers exceptional engineering value for industrial applications where failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness provides critical load-bearing capacity for structural connections, heavy machinery, and construction projects. The zinc yellow-chromate plating offers superior corrosion protection in harsh environments, while the UNC coarse threading ensures reliable performance even when debris is present. The external hex drive accommodates high torque requirements without stripping, making these heavy-duty screws ideal for applications requiring repeated disassembly and reassembly. Engineered to meet rigorous ASME B18.2.1 and SAE J429 specifications, these fasteners provide the confidence needed for critical industrial and construction applications.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features precision Class 2A thread fit with right-hand thread direction and coarse thread spacing. The fastener is fully threaded along its 6" length and manufactured to exacting standards including ASME B18.2.1 and SAE J429 specifications. The Grade 8 classification ensures consistent mechanical properties including the specified tensile strength and hardness values. The zinc yellow-chromate finish provides environmental protection while maintaining dimensional accuracy for reliable performance in industrial applications.