Sizes: M2 M2.5 M3 M4 M5 M6 M8 M10. 20 x M2.5x4x0.8. Quick Installation: The spring washers are easy to install, requiring no other tools. Function: The spring washers mainly used to prevent nuts, bolts and screws from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability and safety of machines.
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