S-91274A195 3/4"-10 x 3" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Superior corrosion resistance from the zinc-flake coating extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides secure, vibration-resistant connections, enhancing assembly integrity and reducing loosening over time.
• Robust Rockwell C37 hardness offers excellent wear resistance, maintaining dimensional stability and thread integrity through repeated use.
• 5/8" hex drive design allows for high-torque installation with standard tools, speeding up assembly and reducing labor time.
• Coarse UNC threads enable quick engagement and are less prone to clogging in dirty or debris-filled applications.
• Compliance with ASME B18.3 and ASTM A574 guarantees consistent quality and interchangeability, ensuring compatibility with existing industrial systems.

Professional Applications & Engineering Value

This 3/4"-10 UNC Socket Head Cap Screw is engineered to address critical challenges in heavy-duty industrial applications where reliability and durability are paramount. Constructed from zinc-flake-coated alloy steel, it provides superior protection against corrosion and chemical exposure, making it ideal for machinery, automotive assemblies, and construction equipment operating in demanding environments. The partially threaded design and coarse thread configuration ensure rapid installation and high clamping force, reducing assembly time while maintaining joint security. With its high tensile strength and precise Class 3A thread fit, this screw minimizes the risk of stripping and vibration-induced loosening, delivering long-term performance in high-stress scenarios such as structural frameworks and power transmission systems.

Specification Summary & Compliance

This socket head cap screw adheres to Class 3A thread fit for precise dimensional accuracy and is manufactured in accordance with ASME B18.3 and ASTM A574 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial use.