S-90128A143 3/8"-16 x 3/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi provides reliable performance in high-stress applications, reducing the risk of fastener failure
• Superior corrosion resistance from zinc plating extends service life in demanding industrial environments
• Precision Class 3A thread fit ensures consistent engagement and optimal clamping force for secure assemblies
• Fully threaded design delivers maximum holding power along the entire fastener length for superior load distribution
• Rockwell C37 hardness maintains structural integrity under heavy loads and repeated use
• Standard hex drive compatibility with 5/16" tools enables quick installation and removal with common workshop equipment
• Coarse UNC thread profile facilitates faster assembly and reduces cross-threading risks in production environments

Professional Applications & Engineering Value

These 3/8"-16 UNC socket head cap screws deliver critical engineering solutions where high-strength fastening is paramount. The zinc-plated alloy steel construction provides excellent corrosion protection for machinery, automotive components, and industrial equipment exposed to harsh operating conditions. The fully threaded design ensures maximum thread engagement in tapped holes, distributing clamping forces evenly to prevent joint loosening under vibration. With their standard hex drive and coarse thread pitch, these screws enable rapid assembly in manufacturing processes while maintaining the precision required for Class 3A thread fit applications. The combination of 170,000 psi tensile strength and Rockwell C37 hardness makes these fasteners ideal for critical structural connections in heavy machinery, automation systems, and precision equipment where reliability cannot be compromised.

Specification Summary & Compliance

This socket head cap screw features precision 3/8"-16 UNC coarse threads with Class 3A fit for consistent engagement and optimal performance. Manufactured to ASTM A574 specifications for socket head cap screws, these fasteners meet rigorous quality standards. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use in industrial applications worldwide. Additional specifications include right-hand thread direction, standard socket head profile, and inch system measurements for compatibility with North American industrial standards.