S-92865A172 1/4"-20 x 7/16" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Zinc plating provides superior corrosion resistance, extending the screw's lifespan in harsh industrial or outdoor environments.
• Grade 5 classification and Rockwell C25 hardness guarantee consistent durability and resistance to wear under heavy loads.
• Coarse UNC threads and Class 2A fit enable quick, secure installation and easy disassembly, saving time on assembly lines.
• External hex drive and hex head design allow for high-torque application with standard tools, ensuring tight, secure fastening.
• Full threading along the 7/16" length offers maximum grip and load distribution across the entire fastener.
• Compliance with ASME B18.2.1/SAE J429 standards ensures interchangeability and reliability in regulated industrial applications.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical challenges in demanding sectors like industrial machinery, automotive assembly, and construction. The zinc-plated steel construction combats corrosion, a common failure point in exposed environments, while the coarse UNC thread and Class 2A fit prevent cross-threading and ensure rapid, reliable fastening even in high-vibration settings. Its 120,000 PSI tensile strength and fully threaded design provide uniform stress distribution, making it ideal for structural applications where joint integrity is paramount. The external hex drive facilitates high torque application, ensuring that connections remain secure under dynamic loads, thereby minimizing maintenance downtime and enhancing operational safety.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threading (1/4"-20) for robust performance. It meets ASME B18.2.1 and SAE J429 specifications, ensuring manufacturing consistency and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated markets without hazardous substances.