S-90128A925 3/4"-10 x 4 1/2" 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 applications, reducing the risk of fastener failure.
• Zinc-plated alloy steel construction provides superior corrosion resistance, extending service life in harsh industrial environments.
• Class 3A thread fit offers precise, tight-tolerance threading for secure, vibration-resistant assemblies.
• Rockwell C37 hardness delivers excellent wear resistance and durability under heavy loads.
• 5/8" hex drive and standard socket head allow for easy installation and high torque application with common tools.
• Coarse UNC threads enable quick assembly and disassembly, improving efficiency in maintenance and production.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This 3/4"-10 UNC Socket Head Cap Screw is engineered for demanding industrial applications where strength and reliability are paramount. The zinc-plated alloy steel material combats corrosion in outdoor or chemically exposed settings, while the 170,000 psi tensile strength and Rockwell C37 hardness prevent stripping and deformation under extreme loads. The coarse thread design and Class 3A thread fit provide superior grip in metals and composites, reducing loosening from vibrations in machinery, automotive, and construction assemblies. Its partially threaded shank and 5/8" hex drive facilitate precise clamping and easy access in confined spaces, making it ideal for heavy-duty fastening tasks that require both high performance and efficient installation.

Specification Summary & Compliance

This socket head cap screw features a 3/4"-10 UNC coarse thread with Class 3A thread fit for high precision, a minimum thread length of 2 1/2", and a total length of 4 1/2". It is manufactured in accordance with ASTM A574 specifications, ensuring consistent quality and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety standards for industrial use.