S-90044A521 10-24 x 3 1/2" ASME B18.3, 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 from the black-oxide finish on alloy steel, extending service life in harsh industrial environments and minimizing maintenance needs.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, enhancing joint integrity and reducing loosening over time.
• Hex socket drive design allows for high torque application and easy installation in confined spaces, improving assembly efficiency and reducing tool slippage.
• Fully threaded rod construction offers consistent engagement along the entire length, enabling flexible positioning and strong clamping force across varied material thicknesses.
• Compliance with ASME B18.3 and material standards guarantees consistent quality, dimensional accuracy, and interoperability with other standardized components.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, making these screws suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

Engineered for industrial fastening solutions, these socket head cap screws excel in applications requiring high clamp load and durability, such as heavy machinery, automotive assemblies, and precision equipment. The black-oxide alloy steel construction combats corrosion, reducing downtime in humid or chemically exposed settings. With a coarse UNRC thread and Class 3A fit, they provide rapid installation and secure holding power, minimizing the risk of strip-out in soft materials or under dynamic loads. The hex drive facilitates easy access in tight spaces, streamlining maintenance and assembly processes while maintaining high tensile strength for long-term reliability in structural and mechanical systems.

Specification Summary & Compliance

This screw features a 10-24 thread size with coarse spacing and Class 3A thread fit for precise dimensional accuracy per UNRC standards. It meets ASME B18.3 specifications for socket head cap screws and is manufactured from alloy steel with a Rockwell C37 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.