S-90128A623 3/8"-16 x 7/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi provides superior resistance to breaking and stripping under extreme loads, ensuring long-term joint integrity.
• Zinc-plated alloy steel construction offers excellent corrosion resistance, extending service life in harsh industrial environments.
• Class 3A thread fit delivers precise, tight-tolerance engagement for reliable, vibration-resistant assemblies.
• Hex socket drive design allows for high-torque installation in confined spaces, improving assembly efficiency.
• Fully threaded shank ensures consistent clamping force along the entire length, ideal for adjustable or deep-set applications.
• Rockwell C37 hardness provides excellent wear resistance, maintaining thread form and drive integrity through repeated use.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for regulated industries.

Professional Applications & Engineering Value

These 3/8"-16 UNC socket head cap screws are engineered to solve critical fastening challenges in demanding environments. The zinc-plated alloy steel construction combats corrosion in machinery, automotive, and outdoor equipment applications, while the coarse UNC thread facilitates quick assembly and resists loosening under vibration. The hex drive socket head profile enables high clamping forces in tight spaces where wrench clearance is limited, making them ideal for precision equipment, heavy-duty fixtures, and structural frameworks. With a 170,000 psi tensile strength and Rockwell C37 hardness, they prevent thread deformation and failure in high-stress connections, ensuring operational safety and reducing maintenance downtime in industrial systems.

Specification Summary & Compliance

This socket head cap screw features a 3/8"-16 UNC coarse thread with a Class 3A thread fit for high precision. It is manufactured to ASTM A574 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial applications.