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.
DIN 336-2003由德国标准化学会 DE-DIN 发布于 2003-07。
DIN 336-2003 在中国标准分类中归属于: J41 刀具,在国际标准分类中归属于: 25.100.50 丝锥和板牙。
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