S-90580A788 5/8"-11 ASTM A563 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel construction for extended service life in harsh environments
• Enhanced wrench grip and torque capability from the extra wide hex profile, reducing slippage during installation
• Reliable mechanical performance backed by ASTM A563 Grade C certification for consistent strength in heavy-duty applications
• Quick and easy assembly with coarse UNC thread spacing, ideal for rapid installation and disassembly
• Precise thread engagement with Class 2B thread fit, ensuring secure fastening and vibration resistance
• Environmental compliance assurance with RoHS 3 (2015/863/EU) compliance for use in regulated industries
• Optimized for industrial use with right-hand thread and external hex drive for standard tool compatibility

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to address critical challenges in industrial fastening, where corrosion and mechanical stress are common concerns. The hot-dipped galvanized steel material provides a robust barrier against rust and chemical exposure, significantly extending the fastener's lifespan in outdoor or high-moisture settings like construction, infrastructure, and agricultural equipment. Its extra wide hex profile offers a larger contact surface for wrenches, enabling higher torque application without rounding the edges—this is crucial for maintaining joint integrity in vibrating machinery or structural assemblies. With 5/8"-11 UNC coarse threads, the nut facilitates faster installation and reduces cross-threading risks, while the Class 2B thread fit ensures consistent clamping force. Ideal for bolted connections in steel frameworks, heavy machinery, and transportation systems, this nut delivers reliable performance under dynamic loads, minimizing maintenance downtime and replacement costs.

Specification Summary & Compliance

This hex nut adheres to inch system dimensions with a thread size of 5/8"-11 UNC and coarse thread spacing. It meets Class 2B thread fit tolerances for precise engagement and is manufactured in compliance with ASTM A563 specifications, ensuring material and mechanical properties align with Grade C requirements. The product is RoHS 3 (2015/863/EU) compliant, confirming the absence of restricted hazardous substances. Key dimensional attributes include a width of 1 1/16" and height of 39/64", supporting its use in standardized industrial assemblies.