lock washers external teeth meaning in English

外齿锁紧垫圈

Serrated lock washer external teeth for assembly
组合件用外锯齿锁紧垫圈
Hexagon head bolt and serrated lock washer external teeth assemblies
六角头螺栓和外锯齿锁紧垫圈组合件
Serrated lock washers external teeth
外锯齿锁紧垫圈
Serrated lock washers external teeth
外齿锁紧垫圈
Cross recessed pan head screw and serrated lock washer external teeth assemblies
十字槽盘头螺钉和外锯齿锁紧垫圈组合件

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