S-90128A379 3/8"-24 x 2 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 in high-stress applications, reducing the risk of fastener failure.
• Rockwell C37 hardness provides superior resistance to wear and deformation, extending service life in demanding environments.
• Zinc-plated alloy steel construction offers excellent corrosion resistance, maintaining integrity in humid or outdoor settings.
• Class 3A fine thread fit delivers precise, secure fastening with minimal backlash, ideal for vibration-prone assemblies.
• 5/16" hex drive socket head allows for easy installation and high torque application with standard tools, speeding up assembly processes.
• Partially threaded design enables controlled clamping force and prevents over-tightening in critical joint areas.
• Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, supporting sustainable procurement.

Professional Applications & Engineering Value

This 3/8"-24 UNF Socket Head Cap Screw is engineered for industrial and mechanical assemblies where precision and durability are paramount. The zinc-plated alloy steel material combats corrosion, while the fine thread and Class 3A fit provide tight tolerances that resist loosening under vibration, common in machinery, automotive, and aerospace components. Its high tensile strength and Rockwell C37 hardness address challenges in high-load applications, ensuring long-term reliability without frequent maintenance. Ideal for use in partially threaded configurations, it offers controlled engagement in critical joints, reducing stress concentrations and enhancing overall structural integrity in industrial cap screw setups.

Specification Summary & Compliance

This socket head cap screw features a 3/8"-24 UNF fine thread with Class 3A precision fit, ensuring dimensional accuracy per inch system standards. It is manufactured in compliance with ASTM A574 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use without hazardous substances.