S-90128A146 6-32 x 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by zinc-plated alloy steel construction, extending service life and maintaining integrity in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly accuracy and vibration resistance.
• Fully threaded design allows for maximum grip and uniform load distribution along the entire length, improving joint stability.
• Hex drive socket head enables easy installation and high torque application with standard tools, reducing assembly time and effort.
• Coarse UNC threads facilitate quick engagement and are less prone to clogging in dirty or debris-filled settings, speeding up production workflows.
• Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to rigorous quality and environmental standards, providing peace of mind for regulated industries.

Professional Applications & Engineering Value

This Socket Head Cap Screw is engineered to address common industrial challenges such as vibration loosening and corrosion-induced degradation. The zinc-plated alloy steel material offers a durable barrier against moisture and chemicals, ideal for machinery, automotive, and outdoor equipment where exposure to elements is frequent. Its 6-32 UNC coarse thread and Class 3A fit provide superior clamping force and ease of assembly in high-vibration environments, reducing maintenance needs. The fully threaded rod type ensures consistent stress distribution, preventing joint failure in critical applications like aerospace or heavy machinery. By combining high tensile strength and standardized dimensions, this screw delivers reliable performance in precision engineering and assembly lines, minimizing downtime and enhancing operational safety.

Specification Summary & Compliance

This screw features precise Class 3A thread fit per UNC standards, with a thread size of 6-32 and coarse spacing for robust engagement. Dimensions include a length of 3/8", head diameter of 0.226", and drive size of 7/64" hex. It meets ASTM A574 specifications for high-strength socket head cap screws, ensuring consistent manufacturing quality. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms adherence to environmental and safety regulations, making it suitable for global industrial use.