S-90044A203 1/4"-32 x 5/8" 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.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in critical assemblies.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish suitable for industrial environments.
• Extra fine UNEF threads allow for finer adjustments and stronger holding power in thin materials or precise mechanisms.
• Hex socket drive design enables high torque application and easy installation in confined spaces with standard tools.
• Full threading along the 5/8" length ensures consistent grip and flexibility in various material thicknesses.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency, environmental safety, and regulatory acceptance for global supply chains.

Professional Applications & Engineering Value

This 1/4"-32 UNEF socket head cap screw is engineered to address common industrial challenges such as vibration-induced loosening and material fatigue. The black-oxide alloy steel construction, combined with Rockwell C37 hardness, provides excellent durability and wear resistance in high-cycle applications like machinery, automotive assemblies, and precision equipment. The extra fine thread design offers superior clamping force in thin-section components, preventing strip-out and ensuring long-term joint integrity. Ideal for industrial fastening where space constraints and high tensile demands are critical, this screw delivers reliable performance in automated systems, tooling, and structural frameworks, reducing maintenance downtime and enhancing operational safety.

Specification Summary & Compliance

This screw features a Class 3A thread fit for precise tolerances, UNEF extra fine threading with a 1/4"-32 size, and a fully threaded 5/8" length. It complies with ASTM A574 specifications for alloy steel socket head cap screws, ensuring material and dimensional consistency. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety standards for restricted substances.