DIN 103-3
DIN 103-3
ISO Metric Trapezoidal Screw Thread; Allowances and Tolerances for Trapezoidal Screw Threads of General Purposestandard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/1977
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/1977