S-93827A251 9/16"-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength with Grade 8 classification, ensuring reliable performance in high-stress industrial applications and preventing fastener failure under heavy loads.
• Superior corrosion resistance from the zinc-flake coating, extending service life in harsh environments and reducing maintenance costs.
• Precise thread engagement with Class 2B fit and UNF fine threads, providing vibration resistance and minimizing the risk of loosening in dynamic assemblies.
• Easy installation and removal thanks to the standard external hex drive design, allowing for efficient tool access and reducing assembly time.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries and global market acceptance.
• Durable material construction using zinc-flake-coated steel, offering excellent wear resistance and long-term reliability in demanding conditions.
• Wide compatibility with inch-system components and right-hand threading, facilitating seamless integration into existing machinery and equipment.

Professional Applications & Engineering Value

This heavy-duty Grade 8 hex nut is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and environmental degradation. The zinc-flake-coated steel construction provides a robust barrier against corrosion, making it ideal for outdoor machinery, automotive assemblies, and construction equipment exposed to moisture and chemicals. Its 9/16"-18 UNF fine threads and Class 2B thread fit ensure tight, secure connections that maintain integrity under dynamic loads, reducing downtime and maintenance needs. By combining high-strength materials with precise external hex drive design, this nut delivers consistent performance in applications requiring reliable, long-lasting fastening solutions, from heavy manufacturing to aerospace components.

Specification Summary & Compliance

This hex nut adheres to Class 2B thread fit tolerances and UNF (Unified National Fine) thread standards, ensuring dimensional accuracy and compatibility with matching fasteners. It meets Grade 8 strength requirements for high tensile and yield strength, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious industries without hazardous substances.