S-90128A522 5/8"-11 x 2 3/4" 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-plated alloy steel extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides consistent engagement and vibration resistance, enhancing assembly integrity.
• Partially threaded design allows for secure clamping without unnecessary thread engagement, improving installation efficiency.
• High hardness (Rockwell C37) offers excellent wear resistance, maintaining fastener integrity under repetitive loads.
• 1/2" hex drive compatibility enables easy installation with standard tools, reducing assembly time and labor costs.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting global regulatory standards.

Professional Applications & Engineering Value

This 5/8"-11 UNC Socket Head Cap Screw is engineered from zinc-plated alloy steel to address critical challenges in heavy-duty industrial settings. The coarse thread and Class 3A thread fit provide superior grip and vibration resistance, preventing loosening in dynamic machinery and structural assemblies. With a tensile strength of 170,000 psi and Rockwell C37 hardness, it withstands extreme mechanical stresses in applications like construction equipment, automotive systems, and manufacturing fixtures. The partial threading ensures optimal load distribution, while the zinc plating offers reliable corrosion resistance, making it ideal for outdoor or corrosive environments where durability and long-term performance are paramount.

Specification Summary & Compliance

This screw features a 5/8"-11 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy and interchangeability. It is manufactured in accordance with ASTM A574 specifications, ensuring consistent material properties and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.