S-90128A148 6-32 x 1/2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc plating protects against rust and environmental degradation, extending service life in harsh industrial settings.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly accuracy and vibration resistance.
• High hardness (Rockwell C37) provides excellent wear resistance and durability, maintaining thread integrity through repeated use.
• Hex socket drive design allows for easy installation and high torque application in confined spaces, improving assembly efficiency.
• Coarse UNC threads enable quick engagement and reduced cross-threading risks, speeding up production and maintenance tasks.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting rigorous industry and regulatory standards.

Professional Applications & Engineering Value

This zinc-plated alloy steel socket head cap screw with 6-32 UNC coarse threads is engineered to address critical industrial challenges, such as vibration loosening and corrosion in demanding environments. The Class 3A thread fit and fully threaded rod design provide consistent clamping force and secure fastening in machinery, automotive, and electronics assemblies. Its high tensile strength and Rockwell C37 hardness prevent stripping and deformation under load, while the hex drive socket head facilitates efficient installation with standard tools. Ideal for applications requiring superior mechanical performance and long-term reliability, this fastener minimizes maintenance needs and enhances operational safety in corrosive or high-stress conditions.

Specification Summary & Compliance

This socket head cap screw features a 6-32 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy, ensuring consistent performance in inch-system applications. Manufactured in compliance with ASTM A574 specifications, it meets stringent material and mechanical property requirements. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substance restrictions.