DIN 336-2003 攻螺纹内径用钻头直经

标准号：DIN 336-2003
中文标准名称：攻螺纹内径用钻头直经
英文标准名称：Diameters of drills for minor diameters of tapped threads
标准类型：J41
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：J41
国际标准分类号：25.100.50
适用范围：This standard specifies sizes for drills to be used prior to tapping cylindrical screw threads with standard length of engagement where the drill diameter is approximately equal to the nominal thread diameter minus the thread pitch. This standard does not apply to cold-forming tapping. Drill sizes are given for the following screw threads: - ISO metric screw threads (coarse and fine pitch); - EU metric screw threads (coarse and fine pitch); - ISO inch screw threads (UNC and UNF); - Pipe threads.