S-91251A802 5/8"-11 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 in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish extends service life in harsh environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides smooth assembly and secure fastening, enhancing operational efficiency and joint integrity.
• High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread form and drive integrity over repeated use.
• Coarse UNRC threads allow for quick installation and better grip in a variety of materials, speeding up production cycles.
• Hex socket drive design enables high torque application with standard tools, ensuring tight fastening without slippage.
• Full threading along the 2" length provides uniform load distribution and flexibility in adjustment for diverse mounting needs.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these black-oxide alloy steel socket head cap screws deliver robust performance where high tensile strength and corrosion resistance are critical. The coarse 5/8"-11 UNRC threads and Class 3A fit ensure rapid, secure fastening in machinery, automotive assemblies, and structural frameworks, reducing vibration loosening and assembly time. With a Rockwell C37 hardness and fully threaded design, they withstand heavy loads and repetitive stress, making them ideal for heavy-duty applications like construction equipment, manufacturing tools, and aerospace components, where reliability and compliance with ASTM A574 standards are paramount.

Specification Summary & Compliance

This socket head cap screw features precise Class 3A thread fit and coarse UNRC threads with a size of 5/8"-11, ensuring dimensional accuracy per industry standards. Manufactured in compliance with ASTM A574 for consistent quality, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and regulated industrial use.