DIN 76-1 is a German industrial standard (Deutsches Institut für Normung) that specifies design dimensions for thread run-outs and thread undercuts for metric ISO threads per DIN 13. It’s critical for engineers and machinists to avoid stress risers and ensure proper assembly of threaded parts.

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DIN 76-1 is a German industrial standard (Deutsches Institut für Normung) that specifies design dimensions for thread run-outs and thread undercuts for metric ISO threads per DIN 13. It’s critical for engineers and machinists to avoid stress risers and ensure proper assembly of threaded parts.