There is a functional restriction in the bore info in drawings. For left-hand threads, the note LH should be displayed in the bore info. However, this only appears as part of the thread class. If, for example, only the size is displayed in the bore information (usual display for standardised sizes in Germany), it is not clear whether the thread is a right-hand or left-hand thread. This can easily lead to errors in production if it is not entered manually.
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