counter sunk head 埋头

counter sunk head rivet 埋头铆钉

counter sunk head bolt 埋头螺栓

flat counter-sunk head screw 平顶埋头螺钉

counter sunk oval head rivet 埋头凸顶铆钉

counter sunk flat head rivet 埋头平顶铆钉

half-counter-sunk rivet head 半埋头式铆钉头

counter sunk ovel head rievt 埋头凸顶铆钉

round head counter sunk rivet 埋头圆顶铆钉