S-92620A409 8-32 x 3/4" 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, preventing fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments.
• High hardness rating (Rockwell C33) provides excellent wear resistance and maintains thread integrity under heavy loads.
• Coarse UNC threading allows for faster installation and better performance in materials prone to stripping.
• Class 2A thread fit offers optimal balance between easy assembly and secure fastening for consistent results.
• External hex drive design enables high torque application with standard tools, reducing installation time.
• Full threading along the 3/4" length provides maximum grip and adjustment flexibility in various material thicknesses.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The 8-32 UNC coarse thread configuration prevents cross-threading and ensures reliable engagement in steel frameworks, machinery assemblies, and structural components. The zinc yellow-chromate plating creates a robust barrier against corrosion, making these steel fasteners ideal for outdoor equipment, automotive systems, and manufacturing environments exposed to moisture and chemicals. With fully threaded design and external hex drive, installation becomes efficient while maintaining the high tensile strength required for critical connections that must withstand vibration and dynamic loads without compromising integrity.

Specification Summary & Compliance

This Grade 8 hex head screw features precise Class 2A thread fit according to UNC standards, ensuring consistent engagement and reliable performance. The fastener complies with SAE J429 specifications for mechanical properties and dimensional requirements. Manufacturing adheres to industry standards for 8-32 UNC coarse thread configuration with right-hand threading and maintains RoHS and REACH compliance for environmental safety. The 3/4" length and fully threaded design provide versatility across various application requirements while maintaining the stringent quality standards expected in industrial fastener applications.