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Depends on where to use!The spring washer is used in the mechanical combination to fasten the anti vibration and non seal components!
If you ask this question if it is to lock up, then want to effect a little better, it is recommended to use double-sided tooth lock washer, I can give you the price of understanding, Baidu my user name!
The inner tooth type flat anti-skid pad is used in the mechanical combination to fasten the vibration resistant sealing components!
