DIN/ EN/ ISO DIFFERENCES IN BOLTS
DIN/ EN/ ISO 區別

 Gain an insight into the difference between DIN, EN and ISO standards

 深入了解DIN、EN和ISO標準之間的差異

This part is intended to assist you in the changeover from withdrawn DIN standards to current EN and/or ISO standards. Information is given on which changes of the respective product standard are relevant for application.

本部分旨在幫助您從廢止的DIN標準轉換為現行的EN和/或ISO標準，提供了與應用相關的產品標準變更信息。

Product descriptions and product changes

Many DIN standards have been the basis for ISO standards. There have often been minor adjustments when the previous DIN standards have been changed to current ISO standards.
If an ISO standard is implemented on national level without any changes, the same designation as the corresponding ISO standard is given to the national standard. Only the abbreviations DIN EN are added to the designation. This means that an ISO nut is ISO 4032-M12-8 all over the world. Thus, the German version of the standard is called DIN EN ISO 4032-M12-8.

許多DIN標準已成為ISO標準的基礎。當以前的DIN標準更改為當前的ISO標準時，通常會有一些小的調整。
如果ISO標準在國內實施而沒有任何變化，則該國家標準將被賦予與相應ISO標準相同的名稱。僅在名稱中添加縮寫DIN EN。這意味著ISO螺母在世界各地都是ISO 4032-M12-8。因此，本標準的德語版本稱為DIN EN ISO 4032-M12-8。

Standardization

In the past, standardization activities at national level have been realized by the German Institute for Standardization (Deutsches Institut für Normung e. V. = DIN) in Germany. Furthermore, there are EN standards at European level and ISO standards at international level which are published by the International Organization for Standardization.

過去，德國標準化研究所（Deutsches Institute für Normang e.V.=DIN）在德國開展了國家級的標準化活動。此外，還有由國際標準化組織（international Organization for standarization）發布的歐洲級EN標準和國際級ISO標準。

Hexagon head bolts  六角頭螺栓

Most DIN standards for these bolt types have been withdrawn years ago. The successor ISO standards largely comply with the DIN standards withdrawn. Therefore, there are normally no restrictions on use. You only have to note that different sizes of fastening tools have to be used for the dimensions M10, M12, M14 and M22. The dimensions for the widths across flats are shown in table.

大多六角頭螺栓的DIN標準已在多年前廢除。后續ISO標準基本上符合已廢止的DIN標準。因此，通常沒有使用限制。您只需注意尺寸M10、M12、M14和M22的對邊寬度不同，必須使用不同尺寸的緊固工具。對邊寬度的尺寸如下表所示 ：

Widths across ?ats for DIN and ISO hexagon head bolts  DIN和ISO六角頭螺栓的對邊寬度

Other screw and bolt types  其他螺栓

Studs  雙頭螺栓

The DIN standards for studs are entirely applicable. Currently, there are no successor ISO standards defined.

DIN雙頭螺栓的的DIN標準完全繼續施行, 目前沒有后續的ISO標準。