S-91236A824 5/8"-11 x 9" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust in demanding industrial environments
• High tensile strength of 60,000 psi ensures reliable performance under heavy loads and structural stress
• Rockwell B69 hardness provides excellent durability and resistance to wear during repeated use
• Coarse UNC thread design offers faster installation and secure holding power in various materials
• Class 2A thread fit guarantees consistent, precision threading for smooth assembly and reduced cross-threading risks
• External hex drive and hex head enable easy installation with standard tools, reducing labor time
• Partial threading allows for controlled clamping force and optimal grip in structural applications

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw is engineered to address critical challenges in heavy-duty industrial settings, where corrosion resistance and structural integrity are paramount. The steel construction with zinc plating combats environmental degradation, extending service life in machinery, construction, and infrastructure projects. Its coarse thread and external hex drive facilitate quick, secure fastening, minimizing downtime in assembly lines. With a 9" length and partial threading, it provides precise load distribution, preventing joint failure in high-stress applications like steel framing, equipment mounts, and automotive assemblies, ensuring reliable performance under 60,000 psi tensile strength demands.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit for consistent dimensional accuracy and meets ASME B18.2.1 and ASTM A307 standards, ensuring manufacturing reliability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in industrial use.