S-92620A726 1/2"-13 x 3 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 industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh environments, minimizing maintenance and replacement costs.
• High hardness rating (Rockwell C33) provides excellent wear resistance and durability under heavy loads and vibration.
• Coarse UNC threads with Class 2A fit allow for quick, easy installation and secure fastening, improving assembly efficiency.
• Fully threaded design offers consistent grip along the entire length, enhancing load distribution and joint integrity.
• External hex drive and hex head enable high-torque application with standard tools, ensuring tight, secure connections.
• Compliance with ASME B18.2.1 and environmental standards (RoHS 3, REACH) guarantees quality, safety, and regulatory adherence for professional use.

Professional Applications & Engineering Value

Engineered for demanding environments, this Grade 8 hex head screw combines high-strength steel and zinc yellow-chromate plating to address common industrial challenges such as corrosion, vibration loosening, and high tensile stress. The 1/2"-13 UNC coarse thread and Class 2A fit ensure rapid, reliable fastening in heavy machinery, construction, and automotive assemblies, where precision and durability are critical. Its fully threaded design maximizes load-bearing capacity, reducing the need for multiple fastener types and simplifying inventory. Ideal for structural applications, this screw meets rigorous ASME B18.2.1 specifications, providing engineers with a trusted solution for maintaining assembly integrity under extreme conditions.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threading (1/2"-13) per inch system requirements. It conforms to ASME B18.2.1 and SAE J429 specifications, ensuring manufacturing consistency and performance reliability. Environmental compliance is verified with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting sustainable and safe usage in global markets.