Supersedes May1981 edition of DIN 7168 Part 1 and July 1986 edition of DIN-7168 Part 2. This standardis not to be used new for designs. General tolerances for these now are covered byI S 0 2768 Parts 1 and 2. See also clause 1 and the Explanatory notes. in keeping with current practicein standards published by the international Organization for Standardization (iS0). a comma has been usedthroughout as the decimal marker. Thisstandardisintended lo ensurethat aildrawings prepared to date in which general tolerances have been specified on the basis of DIN 7168 will remain intelligible and be interpreted correctly, and ais0 to informthe user of this standardthat, for allnew designs, tolerances areto be specified on the basisof I S 0 2768 Parts 1 and 2. Tolerances General as specified apply standard in this for: lineardimensions,such as externalsizes,internal sizes, Step sizes. external radii and chamfer heights for broken edges (cf. both those indicated as and those not usuallyindicated on drawings, such90" angles or the angles of regular polygons c) linear and angular dimensions produced by machining assembled parts: d) workpiece featuresfor which no individual tolerancesof form and position are indicated. Generaltolerances as specifiedin thisstandard are applicable for the dimensions of parts produced by metal removal (i.e. unless this involves special General tolerances as Specified in this standard do not manufacturing processes for which other standards speciapply for: fying general tolerances apply. a) linear and angular dimensions and workpiece features Generaltolerances as specifiedhereshallapplywhen for which tolerances have been individually indicated: reference is made to this standard in drawings or assob) linear and angular dimensions and workpiece features ciated documents (e.g.
delivery conditions) in accordance for which other standards on general tolerances are with clause 5. Specified in drawings or associated documents: If special general tolerances are specified in accordance c) auxiliary dimensions enclosed in brackets (cf.
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