S-90044A232 2 1/2"-4 x 6" 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.
• Black-oxide coating on alloy steel provides corrosion resistance and a durable finish, extending service life in demanding environments.
• Coarse UNC threads with Class 2A fit offer quick assembly and secure fastening, minimizing installation time and improving efficiency.
• 1 3/4" hex drive and standard socket head allow for high torque application and easy access in confined spaces, enhancing installation versatility.
• Fully threaded 6" length enables adjustable clamping and uniform load distribution, ideal for varying material thicknesses.
• Rockwell C37 hardness maintains structural integrity under heavy loads, preventing deformation and ensuring long-term durability.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting strict industrial standards.

Professional Applications & Engineering Value

This 2 1/2"-4 UNC socket head cap screw is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies where high tensile strength and corrosion resistance are paramount. The black-oxide alloy steel construction combats wear and environmental exposure, while the coarse thread design facilitates rapid installation in coarse-grained materials, reducing labor costs. With a fully threaded rod and Class 2A fit, it ensures precise alignment and vibration resistance in dynamic applications, minimizing maintenance downtime. Ideal for securing large components, this screw delivers reliable performance in industrial settings, supported by its robust hex drive for efficient torque transfer.

Specification Summary & Compliance

This socket head cap screw adheres to Class 2A thread fit and UNC coarse thread standards, ensuring dimensional accuracy for consistent assembly. Manufactured in accordance with ASTM A574 specifications, it meets rigorous mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility in global markets.