S-90128A163 1/2"-13 x 1 3/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides secure, vibration-resistant connections, enhancing assembly integrity and reducing loosening over time.
• Fully threaded design allows for maximum grip and adjustability along the entire length, offering versatile fastening solutions.
• High hardness (Rockwell C37) resists wear and deformation, ensuring durability under repetitive loads and extended use.
• Coarse UNC threads enable quick and easy installation, saving time in assembly lines and reducing labor costs.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards for industrial components.

Professional Applications & Engineering Value

This zinc-plated alloy steel socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive systems, and construction equipment. The 1/2"-13 UNC coarse thread and Class 3A fit provide excellent resistance to vibration and shock, preventing loosening in dynamic environments. Made from high-strength alloy steel and finished with a protective zinc coating, it combats corrosion and wear, extending the lifespan of components in exposed or high-moisture conditions. The 3/8" hex drive allows for efficient torque application with standard tools, streamlining installation while maintaining 170,000 psi tensile strength for demanding applications. Ideal for use where reliability and compliance with ASTM A574 standards are paramount, this fastener delivers consistent performance in OEM and MRO operations.

Specification Summary & Compliance

This socket head cap screw features a 1/2"-13 UNC coarse thread with Class 3A precision fit for tight tolerances and secure fastening. It meets ASTM A574 specifications for high-strength alloy steel fasteners, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible manufacturing and use in global markets.