Application of Tolerance Classes

Shape and processing method Round Square Hexagonal Flat
Drawing Grinding Cutting
Tolerance classes Class 9
Class 10
Class 11
Class 8
Class 9
Class 10
Class 11
Class 12
Class 13
Class 12
Class 13
Class 12
Class 13
Class 12/Class 13
Class 14/Class 15
Class 16/Class 17/Class 18

Remarks
Recipients may agree to use classes other than those on the table above for cold finished steel bars, which are difficult to use in the applications on the table due to the finishing process.

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