S-92620A127 1/2"-28 x 1 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 repetitive use.
• Extra fine UNEF threading offers precise engagement and vibration resistance, ideal for machinery requiring fine adjustments and secure fastening.
• Class 2A thread fit ensures easy assembly and interchangeability with standard nuts, speeding up installation and reducing labor time.
• Full compliance with ASME B18.2.1 and SAE J429 guarantees consistent quality and reliability for critical engineering and industrial projects.
• External hex drive design allows for high-torque application with common tools, enhancing installation efficiency and grip security.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address common industrial challenges such as vibration loosening and environmental degradation. Made from high-strength steel and featuring UNEF extra fine threads, it provides superior holding power in precision equipment, automotive assemblies, and heavy machinery. The zinc yellow-chromate plating offers robust protection against rust and corrosion, making it suitable for outdoor or humid conditions. With a 1/2"-28 thread size and fully threaded design, it ensures maximum thread engagement and load distribution, reducing stress concentrations. Ideal for applications demanding high tensile strength and durability, this fastener meets rigorous ASME B18.2.1 standards, delivering consistent performance in industrial fastening solutions.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including Class 2A thread fit for easy assembly and UNEF extra fine threading per industry standards. It complies with ASME B18.2.1 and SAE J429 specifications, ensuring reliability in mechanical and structural applications. The screw is manufactured to meet common regulatory requirements for industrial use, supporting quality assurance in engineering projects.