Historical
DIN 2174:1998
Cold-forming taps for M2 to M16 and M3 x 0,25 to M24 x 2 ISO metric threads - Dimensions (Foreign Standard)
The document applies to cold-forming taps intended for the manufacture of ISO metric coarse pitch thread according to DIN 13-1 or DIN 13-50 and ISO metric fine pitch thread according to DIN 13-3 to DIN 13-7 or DIN 13-50.
Deutsches Institut für Normung [din]