DIN/ EN/ ISO DIFFERENCES IN SCREWS
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This part is intended to assist you in the changeover from withdrawn DIN standards to current EN and/or ISO standards.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。

Small slotted or cross recessed screws  小一字槽或者十字槽螺釘

When introducing the ISO standards for small screws, some of the head heights and head diameters have been changed. These changes may not have any effects on most of the applications. Only in cases with very little space for installa- tion, it is necessary to observe the changes in details. In table 1 the general changes as well as the successor ISO standard are given. Table 2 shows the head dimensions of the DIN standard and the successor ISO standard.

當引入小螺釘的ISO標準時，一些頭部高度和頭部直徑已經改變。這些更改可能不會對大多數應用程序產生任何影響。只有在安裝空間很小的情況下，才有必要詳細觀察變化情況。表1給出了一般變化以及后續ISO標準。表2顯示了DIN標準和后續ISO標準的頭部尺寸。

DIN – ISO comparison of the dimensions of small screws  DIN–ISO小螺釘尺寸比較

Small hexagon or hexalobular screws  小內六角頭及內六角花形螺釘

In Germany, established product standards such as DIN 6912 or DIN 7984 are still valid. There are no successor ISO standards up to now. However, DIN 7991 has been replaced by the ISO standard 10642. Please observe that accor- ding to DIN 74 these countersunk head screws have got F-type countersinks. In recent years, hexalobular screws (TX) have been introduced additionally. There are no DIN standards for these screws.
The head geometry corresponds to cross recessed screws as the head type is identical.

在德國，既定的產品標準，如DIN 6912或DIN 7984仍然有效。目前還沒有后續的ISO標準。然而，DIN 7991已被ISO標準10642取代。請注意，根據DIN 74，這些沉頭螺釘有F型沉頭孔。近年來，內六角花形螺釘（TX）又被引入。這些螺釘沒有DIN標準，頭部幾何形狀與十字槽螺釘相對應，因為頭部類型相同。

DIN – ISO comparison of the dimensions of small hexalobular screws  DIN–ISO小內六角花形螺釘尺寸比較

DIN – ISO comparison of the dimensions of hexagon socket countersunk head screws DIN–ISO 小內六角沉頭螺釘尺寸比較

Screws with normal cylindrical head  常規內六角頭型螺釘

DIN 912 has been replaced by ISO 4762. Some nominal Ø known from the DIN standards are no longer included in the successor ISO standard. Furthermore, an additional standard for screws with metric fine pitch thread has been published. The geometric design of ISO 4762 corresponds to DIN 912, so there are no restrictions on use expected. In addition, there is a new standard for hexalobular socket head cap screws (TX). In comparison to the hexagon drive, the hexalobular drive ensures a better load transmission and less wear of the drive.

DIN 912已被ISO 4762取代。DIN標準中已知的一些尺寸標稱Ø不再包含在后續ISO標準中。此外，還出版了公制細牙螺紋螺釘的附加標準。ISO 4762的幾何設計符合DIN 912，因此預期的使用沒有限制。此外，內六角花形圓柱頭螺釘（TX）有了新的標準。與內六角六邊形傳動相比，六角花形傳動確保了更好的載荷傳遞和更少的磨損。

Other Screws  其他螺釘