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DIN 6930-2:2011

Stamped steel parts - Part 2: General tolerances (Foreign Standard)

This standard is intended to simplify drawings. It specifies general tolerances on linear and angular dimensions and on coaxiality and symmetry in four accuracy grades which are meant for use and hot stampings made from steel flat products. They shall apply whenever reference is made to this standard on drawings or relevant documents (e. g. in delivery conditions). General tolerances for parts made by fine blanking are not covered in this standard. If, by way of exception, it is intended to apply this standard also to components made from semi-finished products other than flat products, or from materials other than steel, this shall be particularly agreed. This standard shall be applied in conjunction with the specifications given in DIN 6932. DIN 6930-1 is valid for the technical delivery conditions of stamped parts. Regulations for general tolerance in existing drawings are included in clause 5.*This standard is the technical revision of the standard which has been published in 2010-01. This revision primarily includes the update of the normative references and the expansion of the nominal dimension ranges and the tolerances for thickness ranges or for angles on flat stamped parts. This standard is intended to simplify drawings and specifies general tolerances for linear and angular dimensions, concentricity and symmetry in four accuracy levels. They are subdivided into f (fine), m (medium), g (coarse) and sg (very coarse). By selection of a certain accuracy level, the normal workshop accuracy shall be considered. General tolerances according to this standard are used for cold- and warm-formed stamped parts made of flat steel products. They apply if this standard is referred to in drawings or associated documents (for example, terms of delivery). This standard hasbeen prepared by NA 026-00-03 AA "Stanzteile" ("Stamped parts") of the Springs, Stamped Parts and Moulded Parts Standards Committee (NAFS) at DIN, the German Institute for Standardization e. V. For further information about the NAFS, visit us on the Internet under www.nafs.din.de.

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