If you’ve seen "ISO 2768-mk" in the title block of a blueprint, What is ISO 2768?
It keeps drawings clean. Only critical dimensions (like a bearing fit or a sealing surface) need specific ± tolerances. general tolerance iso 2768-mk
It signals to the machine shop that standard workshop accuracy is sufficient for non-critical areas, preventing over-processing and reducing costs. If you’ve seen "ISO 2768-mk" in the title
It provides a universal language between designers and manufacturers worldwide, ensuring that a part made in Germany fits a part made in the USA. When NOT to use it It signals to the machine shop that standard
The designation consists of two separate parts that define the accuracy level for different features:
The 'k' class generally allows a symmetry deviation of 0.6mm. Run-out: Circular run-out for class 'k' is typically 0.2mm. Why use ISO 2768-mk?
Understanding ISO 2768-mk: The Standard for General Tolerances