Thread Tolerance Calculator
This app calculates the tolerances of metric thread DIN 13 and DIN ISO 965
For thread size M1 to M68 and MF3x0.5 to MF52x1.5
Tolerance zone for internal thread: 4H to 8H
Tolerance zone for external thread:4h, 6h, 8h, 4g, 6g, 8g