ISO 235:2016

ISO 235:2016 specifies the dimensions of the following three types of drills:
a)    parallel shank drills, stub series;
b)    parallel shank drills, jobber series;
c)    Morse taper shank drills.
It comprises, for each type of drill mentioned above, three tables giving, respectively:
a)    the dimensions in millimetres;
b)    the dimension in inches;
c)    the corresponding lengths, in millimetres and in inches, set out as functions of diameter steps.