DIN 7981
Pan Head Tapping Screws with Recessed Head
English
1970
Detailed Information
Bracketed nominal diameters should be avoided wherever possible.
Normally these tapping screws are made in the sizes for which weight details are given. It is not practicable to make the sizes for which dashes appear instead of length data.
Technical conditions of delivery and material according to DIN 267 Sheet 12.

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