DIN 103-5
DIN 103-5
ISO Metric Trapezoidal Screw Threads; Limiting Sizes for Nut Threads from 8 to 100 mm Nominal Diameterstandard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/1972
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/1972