DIN 6930-2 distinguishes between several accuracy grades, with representing the medium degree of accuracy. These standards apply to cold-stamped parts made from flat steel products.
The standard is divided into three parts: din 6930 m tolerance pdf
: Defines the actual general tolerances across four accuracy grades: : Medium (your specific query) : Very coarse ANSI Webstore Accuracy Grade "m" (Medium) Data However, the legacy of DIN 6930 is incredibly strong
It is worth noting that the original DIN 6930 has been largely superseded by the international standard . However, the legacy of DIN 6930 is incredibly strong. Many older drawings still reference it, and many tool and die makers prefer the DIN 6930 tables because they are often considered slightly more intuitive for specific stamping applications compared to the broader ISO 13920. Consequently, the DIN 6930 tables remain a staple reference in workshops globally. External radii and chamfer heights have their own
External radii and chamfer heights have their own set of requirements to ensure fitment and safety (reducing sharp edges). ± 0.2 mm Over 6mm to 30mm: ± 0.5 mm Over 30mm: ± 1.0 mm Angular Tolerances (Class m)
These apply to lengths, widths, and hole diameters of flat parts. For the medium grade (m), typical limit deviations (± in mm) based on nominal size ranges include: Modulus Metal Up to 6 mm : ±0.1 to ±0.2 mm (depending on thickness). 6 to 30 mm : ±0.3 mm. 30 to 120 mm : ±0.5 mm. 120 to 400 mm : ±0.8 mm. 400 to 1000 mm : ±1.2 mm. Groupe TMA 2. Angular Dimensions for Flat Stampings (Table 3)
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