Inner diameter: M10 Package quantity: 100 pieces Model: Lock Washers External / Internal Tooth Serrated Shakeproof Washer Bright Zinc Key benefits - Prevents fastener loosening from vibration by locking against the bolt head and mounting surface - Serrated teeth bite into the mating surface to resist turning and maintain clamp load - External tooth and internal tooth serrations provide locking options for different surface contacts - Bright zinc finish offers corrosion resistance for general purpose use Specifications - Inner diameter: M10 - Finish: Bright Zinc - Type: External tooth serrated and internal tooth serrated shakeproof washers - Packaging: 100 pieces per pack Compatibility and performance - Designed for use with M10 fasteners - Serrated locking action helps maintain secure assemblies in dynamic or vibration-prone environments - Shakeproof design reduces the risk of loosening in machinery and equipment Practical use scenarios 1) Automotive and automotive aftermarket applications where M10 bolts secure brackets or supports in engine bays or chassis with exposure to vibration 2) Industrial machinery assembly where moving parts or heavy loads require reliable locking under operating conditions 3) Outdoor equipment assembly, such as garden machinery or bike racks, where corrosion resistance and secure fasteners are important Note - The model supports both external tooth serrated and internal tooth serrated locking configurations, with a bright zinc finish for protection.