S-93827A255 5/8"-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength classification, ensuring reliable performance in high-stress industrial applications.
• Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh or outdoor environments.
• Precise thread engagement with Class 2B fit and UNF fine threads, reducing the risk of cross-threading and ensuring secure, vibration-resistant connections.
• Wide compatibility with standard 5/8"-18 UNF bolts and components, facilitating easy integration into existing inch-system assemblies.
• Optimized torque transmission through the external hex drive and standard profile, allowing for efficient installation with common tools.
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting stringent environmental and safety requirements for industrial use.
• Durable construction from high-grade steel, providing long-term reliability and resistance to wear under repetitive loading conditions.

Professional Applications & Engineering Value

This heavy-duty Grade 8 hex nut is engineered to address critical challenges in demanding environments, such as machinery, automotive, and structural assemblies. The zinc-flake-coated steel construction offers enhanced protection against corrosion, significantly reducing maintenance needs and downtime in exposed or chemically aggressive settings. Its 5/8"-18 UNF fine threads and Class 2B fit ensure tight, secure fastening that minimizes loosening under vibration—common in engines, conveyor systems, and heavy equipment. The external hex drive allows for straightforward installation with standard wrenches, improving assembly efficiency. Ideal for applications requiring high tensile strength and consistent performance, this nut delivers reliable clamping force and longevity, supporting operational safety and reducing lifecycle costs.

Specification Summary & Compliance

This hex nut adheres to inch system standards with a thread size of 5/8"-18 UNF and Class 2B thread fit for precise dimensional accuracy. It meets Grade 8 strength requirements, ensuring high mechanical performance. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications. Dimensions include a width of 15/16" and height of 35/64", supporting consistent integration with compatible fasteners.