S-90128A377 3/8"-24 x 2" 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 critical assemblies.
• Superior corrosion resistance from zinc-plated alloy steel construction extends service life and maintains integrity in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight tolerances and secure fastening, minimizing vibration loosening and improving assembly accuracy.
• Partially threaded design allows for controlled clamping force and easier alignment in applications requiring specific grip lengths.
• Fine thread spacing (UNF) provides enhanced load distribution and better resistance to loosening compared to coarse threads.
• Hex socket drive (5/16") enables high-torque installation with standard tools, reducing strip-out risks and speeding up assembly processes.
• Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to rigorous quality, safety, and environmental standards for global industrial use.

Professional Applications & Engineering Value

This 3/8"-24 UNF Socket Head Cap Screw is engineered to address common challenges in high-performance assemblies, such as vibration-induced loosening and corrosion degradation. The zinc-plated alloy steel material offers excellent durability and rust protection, making it ideal for machinery, automotive, and aerospace applications where exposure to moisture and chemicals is a concern. The fine thread spacing and Class 3A thread fit provide superior clamping force and precision, reducing the need for frequent maintenance and re-tightening. With a partially threaded rod and right-hand thread direction, it ensures easy installation and reliable performance in tight spaces, enhancing overall equipment reliability and longevity in demanding industrial settings.

Specification Summary & Compliance

This socket head cap screw features a Class 3A thread fit with precise dimensional accuracy per UNF thread standards, including a thread size of 3/8"-24 and a minimum thread length of 1-1/2". Manufactured to meet ASTM A574 specifications, it ensures consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for industrial use.