Content with minimum thread

For high-strength structural bolting assemblies for preloading to BS EN 14399 an overall recommendation is to have a minimum of 1 (one) thread above the unloaded face of the nut, and a minimum of 4 (four) threads before the shank of the bolt and the nut.
Read more about Are two threads protruding through high-strength structural bolting assemblies for preloading enough? ↬