DIN 13-21:2005-08 ISO general purpose metric screw threads - Part 21: Limits of sizes for fine pitch threads with the preferred tolerance classes; Nominal diameter from 1 mm to 24,5 mm
2005DIN 13-21:2005-08 ISO general purpose metric screw threads - Part 21: Limits of sizes for fine pitch threads with the preferred tolerance classes; Nominal diameter from 1 mm to 24,5 mm
2005DIN 13-21:2005 ISO general purpose metric screw threads - Part 21: Limits of sizes for fine pitch threads with the preferred tolerance classes; Nominal diameter from 1 mm to 24,5 mm