S-90128A459 7/16"-20 x 2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Zinc-plated alloy steel construction provides excellent corrosion resistance, extending service life and maintaining integrity in harsh industrial environments.
• Class 3A thread fit offers precise, tight tolerances for secure fastening and vibration resistance, minimizing loosening in critical assemblies.
• Partially threaded design allows for controlled clamping force and easier alignment, improving assembly efficiency and joint stability.
• Fine UNF thread profile enables finer adjustment and better load distribution compared to coarse threads, enhancing connection precision.
• 3/8" hex drive and standard socket head facilitate easy installation with common tools, reducing assembly time and labor costs.
• Compliance with ASTM A574, RoHS 3, and REACH ensures consistent quality, environmental safety, and adherence to international industrial standards.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these 7/16-20 UNF socket head cap screws address common challenges like vibration-induced loosening and corrosion in machinery, automotive, and construction assemblies. The zinc-plated alloy steel material combines high Rockwell C37 hardness with corrosion protection, ensuring longevity in exposed or high-moisture environments. The fine thread and Class 3A fit provide superior clamping force and resistance to dynamic loads, making them ideal for precision equipment where reliability is critical. By meeting ASTM A574 specifications, these screws deliver consistent performance, reducing maintenance needs and downtime in B2B procurement scenarios.

Specification Summary & Compliance

This product features a 2" length with a minimum thread length of 1-3/8" and 0.4375" thread diameter, adhering to UNF fine thread standards and Class 3A thread fit for precise dimensional accuracy. Manufactured in accordance with ASTM A574, it ensures high strength and durability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in industrial use.