S-90128A913 3/4"-10 x 2 1/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
• Exceptional tensile strength of 170,000 psi ensures reliable performance under heavy loads and vibrations
• Precision Class 3A thread fit provides consistent, secure engagement and reduces assembly issues
• High hardness rating (Rockwell C37) resists wear and deformation for long-term durability
• 5/8" hex drive socket head allows for high-torque installation with standard tools, improving efficiency
• Fully threaded design offers maximum grip length and versatile fastening options
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety

Professional Applications & Engineering Value

This zinc-plated alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, automotive, and construction applications. The 3/4"-10 UNC coarse thread and Class 3A thread fit provide excellent resistance to loosening under dynamic loads, while the fully threaded design ensures uniform stress distribution. The high tensile strength and Rockwell C37 hardness make it ideal for high-stress connections where reliability is paramount. Its 5/8" hex drive facilitates quick, secure installation, reducing downtime in assembly lines and maintenance operations.

Specification Summary & Compliance

This socket head cap screw features a 3/4"-10 UNC coarse thread with Class 3A precision fit and right-hand thread direction. It meets ASTM A574 manufacturing specifications for high-strength socket head cap screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in industrial settings.