S-91395A190 5/8"-18 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance due to premium gray fiberglass construction, eliminating rust concerns in harsh industrial environments
• Reliable high-temperature performance withstanding up to 190°F without compromising structural integrity or thread engagement
• Precision thread fit with Class 2B tolerance ensuring smooth assembly and consistent clamping force in demanding applications
• Industry-standard compatibility through UNC coarse threading and 5/8"-18 size, providing broad interchangeability with existing fastener systems
• Enhanced installation efficiency with standard external hex drive design allowing for quick application using common wrench tools
• Environmental compliance assurance with RoHS 3 (2015/863/EU) certification meeting strict regulatory requirements for hazardous substances
• Optimized dimensional stability featuring 15/16" width and 35/64" height for consistent performance across multiple installation cycles

Professional Applications & Engineering Value

This fiberglass hex nut delivers exceptional engineering value in applications where metal fasteners fail. The gray fiberglass material provides inherent corrosion resistance, making it ideal for chemical processing, marine equipment, and outdoor structures exposed to moisture and corrosive agents. The UNC coarse thread design with Class 2B thread fit ensures reliable engagement even in high-vibration environments, preventing loosening while maintaining consistent clamping force. With a 190°F maximum temperature rating, this external hex nut performs reliably in thermal cycling applications where thermal expansion would compromise metal fasteners. The right-hand thread direction and standard inch system compatibility streamline maintenance and replacement procedures across industrial machinery and equipment assemblies.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit per UNC standards with 5/8"-18 coarse thread spacing and right-hand thread direction. Manufacturing adheres to inch system specifications with dimensional accuracy of 15/16" width and 35/64" height. The product maintains full compliance with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and regulatory acceptance across global markets. Standard hex nut profile and external drive style provide consistent performance within industrial fastener applications requiring reliable, high-temperature capable fastening solutions.