S-91251A143 3/4"-10 x 11" 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.
• Class 3A thread fit provides superior precision and tighter tolerances, enabling secure assembly and minimizing loosening under vibration.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and durability, extending service life in harsh environments.
• Partially threaded design with coarse UNRC threads allows for easier alignment and faster installation, saving time in assembly processes.
• 5/8" hex drive and standard socket head facilitate straightforward installation with common tools, improving efficiency and reducing labor costs.
• Compliance with ASTM A574 guarantees consistent quality and mechanical properties, ensuring reliability for critical engineering uses.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, making it suitable for global supply chains.

Professional Applications & Engineering Value

This 3/4"-10 socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding settings. Its Class 3A thread fit and coarse UNRC threads provide excellent grip and resistance to shear forces, ideal for heavy machinery, automotive assemblies, and structural frameworks. The partially threaded configuration allows for precise clamping without unnecessary thread engagement, reducing stress concentration. With a Rockwell C37 hardness and high tensile strength, it withstands extreme loads, ensuring long-term reliability in applications like construction equipment and manufacturing systems where durability and compliance with standards like ASTM A574 are critical.

Specification Summary & Compliance

This socket head cap screw features a 3/4"-10 UNRC coarse thread with Class 3A fit for high precision, a minimum thread length of 2", and overall length of 11". It adheres to ASTM A574 specifications for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.