An Internal Tooth Lock Washer is used to prevent the loosening or rotation of a bolt, nut, or screw under vibrational or dynamic conditions. It consists of a circular metal disc with teeth or serrations on its inner diameter and these teeth are strategically positioned to bite into the mating surface, such as a nut or workpiece, creating a firm grip. It is made up of strong and durable material, such as steel, to ensure strength and withstand high operating conditions.Attributes:• Provides uniform load distribution across the surface, minimizing potential damage to the material• Withstands high temperatures without losing its strength or integrity• Has high strength and wear resistanceApplications:An Internal Tooth Lock Washer is used in the Fuel Injection Pump Governor Drive Pinion with housing to prevent loosening, or backing out due to vibrations, or shocks.