DIN 40435

Machine taps for the tapped holes (EG) for wire thread inserts for ISO metric screw threads according to DIN 8140 – Coarse pitch threads EG M2 to EG M52 and fine pitch threads EG M8 × 1 to EG M48 × 3 – Dimensions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2003