S-92620A681 7/16"-14 x 2 1/2" ASME B18.2.1, 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, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments, minimizing maintenance needs.
• High hardness rating (Rockwell C33) provides excellent wear resistance, maintaining thread integrity through repeated use.
• Fully threaded UNC coarse design offers faster installation and superior holding power in various materials.
• Precision Class 2A thread fit ensures smooth assembly and consistent performance across applications.
• External hex drive configuration allows for high-torque installation with standard tools, improving installation efficiency.
• Industry standard compliance with ASME B18.2.1 and SAE J429 guarantees interchangeability and reliability in critical assemblies.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness makes them ideal for heavy machinery, structural steel connections, and automotive assemblies where vibration resistance is critical. The zinc yellow-chromate plating provides superior corrosion protection in outdoor or chemically aggressive environments, while the 7/16"-14 UNC coarse thread design ensures rapid installation and reliable clamping force in both metal and composite materials. These fully threaded fasteners with external hex drive are specifically designed to withstand extreme loads while maintaining dimensional stability, making them the go-to choice for engineers specifying heavy-duty industrial fasteners.

Specification Summary & Compliance

This 2 1/2" length hex head screw features precision Class 2A thread fit with 7/16"-14 UNC coarse threads and right-hand thread direction. Manufactured to exacting standards including ASME B18.2.1 and SAE J429 specifications, ensuring consistent quality and performance. The fastener meets industry requirements for dimensional accuracy and mechanical properties, providing reliable performance in critical applications where compliance with established engineering standards is mandatory.