S-91251A665 7/16"-14 x 5/8" 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.
• Black-oxide finish on alloy steel provides enhanced corrosion resistance and a durable, non-reflective surface for long-lasting use.
• Class 3A thread fit with UNRC coarse threads delivers precise, secure engagement and easier assembly in demanding environments.
• Fully threaded design and 5/8" length offer consistent clamping force and versatility across various material thicknesses.
• 3/8" hex socket drive allows for high-torque installation with standard tools, minimizing slippage and improving efficiency.
• Rockwell C37 hardness maintains structural integrity under heavy loads, extending service life in industrial settings.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to rigorous quality and environmental standards for global supply chain compatibility.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, automotive systems, and construction equipment. The alloy steel construction combined with a black-oxide surface treatment resists rust and wear, even in harsh conditions, reducing maintenance downtime. Its 7/16"-14 coarse UNRC threads and Class 3A fit ensure quick, secure fastening with minimal cross-threading risks, while the fully threaded rod type provides uniform stress distribution. Ideal for high-vibration environments, this screw offers reliable fastening solutions that enhance operational safety and longevity in industrial fastener systems.

Specification Summary & Compliance

This product features precise Class 3A thread fit with UNRC coarse threads and a 5/8" length, ensuring dimensional accuracy per industry standards. It meets ASTM A574 specifications for high-strength socket head cap screws, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible manufacturing and use.