S-95355A259 5/8"-11 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh chemical and marine environments thanks to premium 316 stainless steel construction
• Reliable left-hand thread engagement for specialized applications where standard right-hand threads would loosen under counter-clockwise rotation
• Secure and precise fit ensured by the Class 2B thread fit, offering optimal clearance for smooth assembly and vibration resistance
• Robust coarse threading (5/8"-11 UNC) provides faster installation and reduced cross-threading risk compared to fine threads
• Standard external hex drive design allows for high-torque installation using common wrenches and sockets
• Compliance with RoHS 3 standards ensures environmental safety and meets stringent international regulatory requirements
• Durable inch-standard dimensions (15/16" width, 35/64" height) guarantee interchangeability and consistent performance in industrial assemblies

Professional Applications & Engineering Value

This 5/8"-11 UNC left-hand hex nut is engineered to solve critical challenges in demanding industrial settings. The 316 stainless steel material provides exceptional resistance to chlorides, acids, and extreme temperatures, making it ideal for marine equipment, chemical processing plants, and food-grade machinery. The left-hand thread direction is specifically designed for applications where rotational forces would cause a standard right-hand thread to loosen, such as on the left side of rotating shafts, mixer blades, or certain automotive components. Combined with the coarse UNC thread and Class 2B thread fit, this nut ensures rapid, reliable assembly and long-term holding power even under high-vibration conditions, reducing maintenance downtime and improving operational safety.

Specification Summary & Compliance

This hex nut conforms to Unified National Coarse (UNC) inch threading standards with a 5/8"-11 thread size and Class 2B tolerance for consistent dimensional accuracy. The manufacturing adheres to standard industrial specifications for external hex drive nuts. It is fully RoHS 3 (2015/863/EU) compliant, confirming the absence of restricted hazardous substances, and meets general industry requirements for corrosion-resistant fastening applications.