S-90128A151 6-32 x 3/4" ASTM A574 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 in demanding applications.
• Superior corrosion resistance provided by the zinc-plated alloy steel material, extending service life and maintaining integrity in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal backlash, ideal for applications requiring high vibration resistance.
• High hardness rating of Rockwell C37 enhances durability and wear resistance, minimizing thread deformation during repeated installation and removal.
• Standard hex drive design allows for easy installation with common tools, improving assembly efficiency and reducing labor time.
• Coarse UNC thread profile enables quick engagement and disassembly, making it suitable for maintenance-heavy equipment and production lines.
• Full compliance with ASTM A574 ensures consistent quality and mechanical properties, providing peace of mind for critical engineering projects.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address common industrial fastening challenges, such as vibration loosening and environmental degradation. The zinc-plated alloy steel construction offers excellent protection against rust and corrosion, making it ideal for outdoor machinery, automotive assemblies, and electronic enclosures exposed to moisture. The 6-32 UNC coarse thread and Class 3A fit provide superior grip in softer materials or where rapid assembly is required, reducing the likelihood of cross-threading. With its high tensile strength and Rockwell C37 hardness, this fastener maintains clamp load integrity in high-vibration environments, such as motors, conveyors, and heavy equipment, ensuring long-term operational safety and reducing maintenance downtime.

Specification Summary & Compliance

This product features precise Class 3A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It is manufactured in compliance with ASTM A574 specifications for alloy steel socket head cap screws, guaranteeing consistent mechanical properties. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, confirming its safety for use in various industries without hazardous substances.