This standard is intended to simplify drawings. It specifies general tolerances on linear and angular dimensions, and on coaxiality and symmetry with four tolerance classes as follows: f (fine), m (medium), g (coarse) and sg (very coarse). By selecting a specific tolerance class, the customary workshop accuracy is taken into consideration.

General tolerances as specified in this standard are used for cold or hot stampings made from flat steel products, and apply wherever reference is made to this standard in drawings or other relevant documents (e.g. Delivery conditions). General tolerances for parts made by fine blanking (see VDI 2906 Part 5) are not covered by this standard. If, as an exception, this standard is also applied to parts made from semi-finished products other than flat products, or from materials other than steel, this shall be agreed separately. This standard is to be applied in conjunction with DIN 6932 on design rules for stamped steel parts.

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M m-m 01 a E xm Z ° m o • W 9 m m v •m m=. DEUTSCHE NORM Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). 10.91 April 1991 General tolerances for Iinearand angular dimensions and geometrical=.tolerances (not to be used for.new destgns).' Specified on the basis of DIN 7168 will.

Technical delivery conditions for stampings are specified in DIN 6930-1. Guidelines for general tolerances indicated on existing drawings are given in Clause 5.