The standard is a critical historical specification in mechanical engineering that defines ISO deviations for holes (internal diameters) for sizes ranging from 1 mm to 500 mm . While it has largely been superseded by modern international standards like ISO 286 , it remains a foundational reference for legacy technical drawings, maintenance of older machinery, and educational purposes. What is DIN 7161?
| Nominal Dimension Range | Class f (Fine) | Class m (Medium) | Class c (Coarse) | Class v (Very Coarse) | | :--- | :--- | :--- | :--- | :--- | | 0.5 up to 3 | ±0.05 | ±0.1 | ±0.2 | -- | | >3 up to 6 | ±0.05 | ±0.1 | ±0.3 | ±0.5 | | >6 up to 30 | ±0.1 | ±0.2 | ±0.5 | ±1.0 | | >30 up to 120 | ±0.15 | ±0.3 | ±0.8 | ±1.5 | | >120 up to 400 | ±0.2 | ±0.5 | ±1.2 | ±2.5 |
Since you are struggling to find a dedicated , you might wonder if you can simply use ISO 2768. Here is the direct comparison: din 7161 pdf
If you are looking for the technical "deep dive" on this specification, here is what you need to know about its role in mechanical engineering and where to find the documentation. ⚙️ What is DIN 7161?
In simpler terms, this standard tells manufacturers how much a part can deviate from its nominal dimension when the drawing does not explicitly list a tolerance. It falls under the umbrella of "General Tolerances" (Allgemeintoleranzen), similar to the international standard , but with specific distinctions relevant to German engineering practices. The standard is a critical historical specification in
The standard defines several grades of clearance, ranging from precision sliding fits to loose running fits. The most common references you will find in the DIN 7161 PDF include:
For engineers, machinists, and quality assurance professionals, precision is not just a goal—it is a language. In the world of technical drawing and mechanical engineering, few standards speak as clearly as . If you have been searching for a DIN 7161 PDF , you are likely aware that locating a legitimate, readable, and complete version of this standard can be frustrating. | Nominal Dimension Range | Class f (Fine)
As DIN 7161 is a copyrighted technical standard, it is primarily available through official distributors and technical libraries. DIN 7161 - 1965-08
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