S-90124A798 5/8"-11 x 1 1/2" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: With a 120,000 PSI tensile strength, this screw provides reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance: The zinc-plated steel construction offers excellent protection against rust and corrosion, extending the service life of your assemblies.
• Optimized for High Torque: The external hex head and coarse UNC threading allow for easy installation with standard tools and secure gripping power.
• Guaranteed Fit and Durability: The Class 2A thread fit ensures consistent, precise engagement, while the Rockwell C25 hardness provides excellent wear resistance.
• Versatile, Fully Threaded Design: The fully threaded 1 1/2" length offers maximum grip and holding power along the entire shank for a wide range of material thicknesses.
• Proven Reliability for Demanding Use: Meets Grade 5 standards, making it a trusted choice for heavy-duty mechanical and structural applications.
• Secure Locking Capability: The wire locking type feature helps prevent loosening under vibration, maintaining joint integrity.

Professional Applications & Engineering Value

This 5/8"-11 UNC Grade 5 zinc-plated steel hex head screw is engineered to solve critical challenges in industrial fastening. Its coarse thread design and high tensile strength make it ideal for assembling heavy machinery, structural steel frames, and automotive components where vibration resistance and load-bearing capacity are paramount. The zinc plating provides a durable barrier against harsh environmental conditions, preventing corrosion-induced failures. The combination of a fully threaded body and Class 2A fit ensures a precise, secure connection that minimizes the risk of stripping or cross-threading, streamlining installation and reducing maintenance downtime in demanding industrial applications.

Specification Summary & Compliance

This fastener features a 5/8"-11 UNC thread with a Class 2A fit for consistent dimensional accuracy. It is manufactured to meet ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring reliable performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated markets and sustainable manufacturing processes.