S-90128A144 6-32 x 1/4" 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 plating, extending service life and maintaining integrity in harsh or outdoor environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, ideal for applications requiring high vibration resistance.
• High hardness rating (Rockwell C37) enhances wear resistance and durability, ensuring the screw maintains its form and function over repeated use.
• Coarse UNC thread design allows for quicker installation and better performance in materials where fine threads might strip or fail.
• Fully threaded body provides consistent holding power along the entire length, offering versatile fastening solutions across various material thicknesses.
• Compliance with ASTM A574, RoHS 3, and REACH ensures the screw meets rigorous industry standards for quality, safety, and environmental responsibility.

Professional Applications & Engineering Value

This zinc-plated alloy steel socket head cap screw is engineered to address common industrial challenges such as vibration loosening, material fatigue, and environmental corrosion. The 6-32 UNC coarse thread and Class 3A fit provide excellent grip and stability in metals and plastics, making it ideal for machinery, automotive assemblies, and electronic enclosures where precision and reliability are critical. The hex drive socket allows for high torque application with standard tools, ensuring secure installations without stripping. Its high tensile strength and hardness prevent deformation under load, offering long-term performance in heavy-duty applications. The corrosion-resistant zinc plating further enhances durability, making it a trusted choice for OEMs and maintenance professionals seeking dependable industrial fasteners.

Specification Summary & Compliance

This socket head cap screw features a 6-32 UNC thread with Class 3A fit for precise dimensional accuracy, a 1/4" length, and a 7/64" hex drive. It is manufactured in compliance with ASTM A574 specifications, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations without the use of restricted hazardous substances.