S-90045A475 5/8"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through top lock distorted thread design that maintains secure fastening under dynamic loads
• Excellent corrosion resistance provided by 18-8 stainless steel construction for extended service life in harsh environments
• Precise thread engagement with Class 2B fit ensuring reliable performance and easy assembly in industrial applications
• Enhanced torque transmission via standard external hex drive profile for secure installation with common tools
• Optimized for fine-thread applications with 5/8"-18 UNF threads offering superior resistance to loosening
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Dimensional consistency with 15/16" width and 35/64" height for reliable interchangeability in assembly operations

Professional Applications & Engineering Value

This 18-8 stainless steel locknut delivers critical vibration resistance in demanding industrial environments where fastener integrity is paramount. The top lock distorted thread design creates consistent prevailing torque that prevents loosening under continuous vibration and dynamic loading conditions. Engineered with 5/8"-18 UNF fine threads and Class 2B thread fit, this external hex locknut provides precise engagement in machinery, heavy equipment, and automotive applications where fine thread fasteners are specified for their superior fatigue resistance. The combination of stainless steel material and distorted thread technology ensures long-term reliability in corrosive environments while maintaining consistent locking performance throughout the fastener's service life.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerance for optimal engagement with mating components. Features UNF thread standard with 5/8"-18 fine thread specification and top lock distorted thread design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. The external hex drive profile (15/16" width) and 35/64" height provide standardized installation compatibility across various assembly environments.