Grade 8 Zinc-Plated Flange Nut – 5/8″-18 Thread, 1-1/8″ OD

This Grade 8 flange nut is built for high-strength fastening applications where reliability matters. Designed with a 5/8″-18 fine thread, it provides a secure, tight fit for heavy-duty use in agricultural, industrial, and trailer applications.

The integrated flange acts as a built-in washer, distributing load evenly and helping prevent loosening under vibration—making it ideal for demanding environments. Finished with a durable zinc plating, this nut offers added corrosion resistance for extended performance in outdoor conditions.

Key Features:

• Grade 8 strength for heavy-duty applications
• 5/8″-18 fine thread for secure fastening
• 1-1/8″ outer diameter flange for load distribution
• Zinc-plated finish for corrosion resistance
• Built-in flange eliminates need for separate washer