S-90044A209 5/16"-32 x 1 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 in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish prolongs service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides tight tolerances for secure fastening and vibration resistance in critical assemblies.
• Extra fine UNEF threads offer finer adjustment and improved load distribution, ideal for precision engineering applications.
• Fully threaded design allows for maximum grip along the entire length, enhancing holding power in various material thicknesses.
• High hardness (Rockwell C37) increases wear resistance, ensuring durability under repetitive loads and extended use.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global regulatory standards.

Professional Applications & Engineering Value

This 5/16"-32 Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address common industrial challenges such as vibration loosening and corrosion in demanding settings. The extra fine UNEF thread and Class 3A fit provide exceptional precision, reducing the risk of cross-threading and ensuring stable connections in machinery, automotive, and aerospace components. Its high tensile strength and Rockwell C37 hardness make it suitable for heavy-duty applications where reliability is critical. The black-oxide surface treatment enhances corrosion resistance, extending service life in humid or chemically aggressive environments. Ideal for use with a 1/4" hex drive, it allows for easy installation in confined spaces, improving assembly efficiency and reducing downtime in production lines.

Specification Summary & Compliance

This socket head cap screw features a Class 3A thread fit for high precision and adheres to UNEF extra fine thread standards. It is manufactured in compliance with ASTM A574 specifications, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental and safety compliance for global industrial use.