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A Guide to ISO 2768 and Standard Workshop Tolerances In mechanical engineering and manufacturing, it is impossible to produce a part to an exact, theoretical dimension. Every cut, bend, and hole has a natural variance. The question is not if a dimension will deviate, but how much deviation is acceptable.
This is where the becomes an essential tool. What is a General Tolerance Chart? A General Tolerance Chart (often based on international standards like ISO 2768-1 or DIN 7168 ) provides a standardized set of permissible limits for linear and angular dimensions where no individual tolerance is specified on a technical drawing.
Disclaimer: This text is for informational purposes. Always refer to the official ISO or ANSI standards for legally binding tolerances in your contracts and quality agreements.
