标 准 编 号：DIN 74-2003
简体中文标题：DIN EN 27721规定的沉头螺钉埋头孔(带钉头沉头螺钉除外)
繁体中文标题：DIN EN 27721规定的沈头螺钉埋头孔(带钉头沈头螺钉除外)
English Name：Countersinks for countersunk head screws except countersunk head screws with heads according to DIN EN 27721