S-92620A685 7/16"-14 x 3" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with 150,000 psi tensile strength and Rockwell C33 hardness for reliable performance in high-stress environments
• Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh industrial conditions
• Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening and vibration resistance
• Heavy-duty construction meeting Grade 8 specifications for the most demanding mechanical applications
• Industry-standard compliance with ASME B18.2.1 and SAE J429 ensuring consistent quality and interchangeability
• Full-threaded design providing maximum grip length and uniform stress distribution along the entire fastener
• External hex drive compatibility allowing for high-torque installation with standard wrenching tools

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The zinc yellow-chromate plated steel construction provides critical corrosion resistance in manufacturing environments where exposure to moisture and chemicals is common. The UNC coarse thread configuration ensures rapid installation and superior resistance to vibration loosening, while the fully threaded design maximizes clamping force distribution. Engineered to withstand extreme mechanical stresses, these high-strength fasteners prevent joint failure in critical applications such as construction equipment, automotive frames, and industrial machinery where 150,000 psi tensile strength is essential for safety and reliability.

Specification Summary & Compliance

This 7/16"-14 x 3" hex head screw features precise Class 2A thread fit tolerances and UNC coarse thread spacing (14 TPI) with full threading along the entire 3-inch length. Manufactured to meet ASME B18.2.1 dimensional specifications and SAE J429 Grade 8 mechanical properties, ensuring consistent performance and interchangeability. The fastener maintains compliance with industry standards for dimensional accuracy and mechanical properties, with the zinc yellow-chromate finish providing additional corrosion protection while meeting environmental regulations for industrial applications.