Lock Washers 1000Pcs External Toothed Serrated Lock Shakeproof Star Gasket Nickel Plating/Black Zinc(M2.5,Black zinc)

Installation Tip: Press the washer squarely onto the shaft with even pressure; for best results, use a press or a hammer with a flat drift to ensure all teeth engage fullyModel : M2.5 M3 M3.5 M4 M5 M6Material : 65MnCategory : Outer toothed washerMaterial : SteelThickness(mm) : 0.3-1.2mmModel Number : M2.5 M3 M3.5 M4 M5 M6Note:1. The item is small in size, please keep it away from kids.2.Please allow 1-3mm errors due to manual measurement.3.Due to light and screen setting difference, item's color may be slightly different from the pictures.

• nternal Teeth Grip: The sharp inward-pointing prongs dig into the shaft surface when compressed, creating positive mechanical lock that resists loosening from vibration and rotation
• Rigid Core: Formed from hardened steel that maintains its tooth geometry under high clamping force, preventing deformation and ensuring consistent grip through multiple install cycles
• Precision Fit: The uniform inner diameter provides consistent contact with standard shaft sizes, eliminating the play that can cause fasteners to work loose over time
• Bite Retention: The aggressive tooth profile embeds into softer shaft materials, providing reliable holding power even on smooth or lightly lubricated surfaces
• Reusable Hold: Unlike single-use fasteners, the washer can be removed and reinstalled while maintaining its grip, making it suitable for maintenance and adjustment tasks