S-90044A239 5/16"-24 x 5" 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 industrial applications, reducing the risk of fastener failure.
• Corrosion-resistant Black-Oxide finish on alloy steel enhances durability and provides added protection in demanding environments.
• Precise Class 3A thread fit offers superior engagement and vibration resistance, maintaining joint integrity over time.
• 1/4" hex drive socket head allows for easy installation and high torque application with standard tools, improving assembly efficiency.
• Partially threaded design with fine UNRF threads provides optimal clamping force and secure fastening in precision assemblies.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chain requirements.
• Rockwell C37 hardness ensures excellent wear resistance and long service life under repetitive loads.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in heavy-duty machinery, automotive, and aerospace assemblies where vibration resistance and high tensile strength are paramount. The fine UNRF thread spacing and Class 3A fit minimize loosening under dynamic loads, while the partially threaded shank concentrates stress appropriately to prevent shear failure. The 1/4" hex drive facilitates secure tool engagement in confined spaces, reducing installation time and improving workflow efficiency. Ideal for industrial fastening applications requiring consistent performance, this screw's ASTM A574 compliance and robust material properties ensure reliability in demanding operational conditions.

Specification Summary & Compliance

This 5/16"-24 UNRF Socket Head Cap Screw features a Class 3A thread fit for precise tolerance, fine thread spacing, and a 5" length with partial threading. Manufactured to ASTM A574 specifications, it ensures consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in global markets.