S-92865A012 1/4"-28 x 1 1/2" 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 corrosion resistance, extending service life in various industrial environments and minimizing maintenance needs.
• Grade 5 steel construction with Rockwell C25 hardness offers superior durability and resistance to wear, ideal for repeated assembly and disassembly.
• UNF fine thread with Class 2A fit delivers precise, secure fastening with reduced likelihood of loosening under vibration.
• Fully threaded design allows for maximum grip length and uniform load distribution across the entire fastener.
• External hex drive and hex head enable easy installation and removal with standard tools, improving assembly efficiency.
• Compliance with ASME B18.2.1 and RoHS 3 ensures adherence to industry standards for safety and environmental regulations.

Professional Applications & Engineering Value

These Grade 5 steel hex head screws are engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive components, and structural frameworks. The 1/4"-28 UNF fine thread and Class 2A thread fit provide excellent vibration resistance and precise alignment, reducing the risk of joint failure in dynamic environments. Made from high-strength steel and finished with zinc plating, they offer robust corrosion protection, making them suitable for outdoor or humid conditions. Their fully threaded design ensures consistent clamping force, while the external hex drive simplifies maintenance. Ideal for applications demanding high tensile strength and reliability, these screws deliver long-term performance and reduce downtime in industrial fastening systems.

Specification Summary & Compliance

This screw features a 1/4"-28 UNF fine thread with Class 2A dimensional accuracy, ensuring tight tolerances for secure fits. It complies with ASME B18.2.1 and SAE J429 Grade 5 specifications for mechanical properties, and meets RoHS 3 (2015/863/EU) environmental standards, confirming it is free from hazardous substances. The manufacturing adheres to industry norms for thread type and strength grade, providing assurance in professional applications.