S-90044A176 5/8"-11 x 4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi for reliable performance in high-stress industrial applications.
• Superior corrosion resistance with black-oxide coating, extending service life in demanding environments.
• Precise Class 3A thread fit ensures tight, secure fastening with minimal risk of loosening under vibration.
• Fully threaded design provides consistent clamping force along the entire 4" length for uniform load distribution.
• High hardness (Rockwell C37) offers excellent wear resistance and durability under repeated use.
• 1/2" hex drive socket head allows for easy installation with standard tools, reducing assembly time.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, automotive, and construction sectors. Its UNRC coarse thread and Class 3A fit deliver superior grip and vibration resistance, preventing joint failure in dynamic loads. The fully threaded right-hand design ensures full engagement in tapped holes, while the high tensile strength and Rockwell C37 hardness withstand extreme forces without stripping or shearing. Ideal for industrial fasteners requiring reliable, long-term performance under harsh conditions, it reduces maintenance downtime and enhances structural integrity.

Specification Summary & Compliance

This socket head cap screw features a 5/8"-11 UNRC coarse thread with Class 3A precision fit, ensuring tight tolerances per inch-based standards. It meets ASTM A574 specifications for alloy steel socket head cap screws, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for international industrial use.