标 准 编 号：DIN 34819-2008 简体中文标题：六角叶片套筒半沉头带卡套的攻丝螺钉 繁体中文标题：六角叶片套筒半沈头带卡套的攻丝螺钉 English Name：Hexalobular socket raised head tapping screws with collar ...