S-4991T969 9/16"-18 Lug Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh environments
• Optimal torque transmission through 13/16" hex width design for secure fastening and reduced slippage
• Precise thread engagement with 9/16"-18 thread size ensuring reliable performance under heavy loads
• Enhanced safety compliance meeting REACH (EC 1907/2006) standards for hazardous substance control
• Heavy-duty durability built to withstand extreme automotive and industrial vibration cycles
• Easy installation and removal with standard hex profile compatible with common wrench tools
• Environmental responsibility through compliance with EU chemical safety regulations

Professional Applications & Engineering Value

Engineered for demanding automotive and industrial applications, these heavy-duty hex lug nuts solve critical fastening challenges where vibration resistance and long-term reliability are paramount. The zinc-plated steel construction provides essential corrosion protection against road salts, moisture, and chemical exposure, significantly reducing maintenance frequency in commercial vehicle fleets, trailer assemblies, and heavy equipment. The precisely machined 9/16"-18 thread form maintains consistent clamping force while the generous 13/16" hex width distributes torque evenly, preventing rounding and ensuring repeatable serviceability. This combination addresses common failure points in wheel mounting systems while meeting stringent REACH compliance requirements for industrial safety standards.

Specification Summary & Compliance

Manufactured to standard Class 2A thread tolerances for consistent fit with mating components. The zinc-plated steel hex lug nuts feature 9/16"-18 UNC thread specifications and comply with REACH (EC 1907/2006) regulations regarding SVHC substances (updated January 17, 2023, 233 substances). Product dimensions include 13/16" across flats width for standard tool compatibility. Manufacturing processes adhere to industry standards for heavy-duty automotive fasteners ensuring reliable performance in critical applications.