S-90044A175 5/8"-11 x 3 1/2" 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.
• Superior corrosion resistance from the black-oxide finish extends service life in harsh environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides secure, vibration-resistant connections, enhancing assembly integrity and safety.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and disassembly.
• Coarse UNRC threads enable faster installation and reduced cross-threading risks, improving efficiency in production lines.
• Fully threaded design allows for adjustable clamping force and uniform stress distribution across the entire length.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting global industrial standards.

Professional Applications & Engineering Value

Engineered for demanding environments, these Black-Oxide Alloy Steel Socket Head Cap Screws address critical challenges in heavy machinery, automotive, and construction sectors. The coarse UNRC thread design facilitates quick assembly in high-vibration settings, while the Class 3A thread fit guarantees tight tolerances to prevent loosening under dynamic loads. With a 170,000 psi tensile strength and Rockwell C37 hardness, they withstand extreme mechanical stresses and abrasive conditions, reducing downtime. The black-oxide surface treatment provides a durable barrier against moisture and chemicals, making them ideal for outdoor or corrosive applications. Fully threaded and compliant with ASTM A574, these screws deliver consistent performance in precision engineering projects.

Specification Summary & Compliance

This socket head cap screw features a 5/8"-11 coarse UNRC thread with Class 3A fit for high precision, a 1/2" hex drive for secure tool engagement, and dimensions of 3-1/2" length, 15/16" head diameter, and 5/8" head height. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring material and manufacturing consistency. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for industrial use.