外齿锁紧垫圈
/ɛkstˈɜːnəl ˈtuːθ ˈlɒk ˈwɒʃə/
n
English: external tooth lock washer · 外齿锁紧垫圈
English · external tooth lock washerEspañol · arandela de presión de dientes externosFrançais · rondelle à denture extérieure
释义：Washer having protuberances on the outside so that a screw tightens securely and will not loosen.