标 准 编 号：DIN 7427-2009 简体中文标题：螺钉和螺母装配工具.六边形镶齿钻头用方形扳手套筒和六边形扳手加长杆 繁体中文标题：螺钉和螺母装配工具.六边形镶齿钻头用方形扳手套筒和六边形扳手加长杆 English Name：Assembly tools for screws and nuts - Square drive sockets and hexagon drive extensions for hexagon insert bits - Technical specifications
