S-90128A192 8-32 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.
• Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies with minimal backlash.
• High hardness rating (Rockwell C37) enhances wear resistance, maintaining thread integrity through repeated use.
• Hex socket drive design allows for high-torque installation in confined spaces, improving assembly efficiency.
• Coarse UNC threading enables quick installation and better debris clearance, ideal for general-purpose applications.
• Full compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global supply chains.

Professional Applications & Engineering Value

This 8-32 UNC thread socket head cap screw is engineered to address critical challenges in machinery assembly, automotive components, and precision equipment. The zinc-plated alloy steel construction combats corrosion in humid or chemically exposed settings, while the Class 3A thread fit and coarse thread spacing deliver consistent clamping force and resistance to loosening under vibration. The hex drive and standard socket head profile facilitate secure tool engagement, reducing installation time and preventing strip-out in high-torque scenarios. Ideal for industrial applications requiring robust, reusable fasteners, this screw’s fully threaded rod design ensures uniform load distribution across the entire length.

Specification Summary & Compliance

This fastener adheres to inch system dimensions with a 3/8" length and 8-32 UNC coarse thread, manufactured to Class 3A thread fit for precision assembly. It meets ASTM A574 specifications for high-strength socket head cap screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no restricted substances are present. The right-hand thread direction and fully threaded design support standard industrial usage.