arandela de presión de dientes externos
/ˌaɾandˈela ðe pɾesjˈon de ˈðjɛntes ekstˈeɾnos/
n
English: external tooth lock washer · 外齿锁紧垫圈
Significado：Washer having protuberances on the outside so that a screw tightens securely and will not loosen.