Machine Processing and Tolerance Grades
Relation of machine processes to tolerance grades
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Machining processes that under normal conditions will produce work within the tolerances indicated.
| Tolerance Grades | |||||||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| Lapping and Honing | |||||||||
| Cylindrical Grinding | |||||||||
| Surface Grinding | |||||||||
| Diamond Turning | |||||||||
| Diamond Boring | |||||||||
| Broaching | |||||||||
| Reaming | |||||||||
| Turning | |||||||||
| Boring | |||||||||
| Milling | |||||||||
| Planning and Shaping | |||||||||
| Drilling | |||||||||
ANSI B4.1 Standard Tolerances are indicated in the diagram below:
- 1 in (inch) = 25.4 mm
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