The Euclid 3-1/4"-12 Thread Spindle Nut is designed to provide a secure fit for your hub assembly. This nut is made from heat treated steel for increased structural strength and durability. It features a hex design for easier installation and maintenance and does not require special tools. This nut helps maximize tire life and reduce maintenance downtime, ensuring your hub assembly is securely fastened at the proper setting. FleetPride is your First Click in Heavy Duty®.