DIN 13-26 : 2005现行
ISO GENERAL PURPOSE METRIC SCREW THREADS - PART 26: LIMITS OF SIZES FOR FINE PITCH THREADS WITH THE PREFERRED TOLERANCE CLASSES - NOMINAL DIAMETER FROM 252 MM TO 1000 MM
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
This standard is included in DIN Handbook 45. Applies to ISO metric screw threads having the basic profile as defined in DIN 13 Part 19. The limits for the bolt radius are expressed by R = 0,144 P = H/6 for the maximum dimension and by Rmin = 0,125 P = H/7 for the minimum dimension of the minor diameter d3, as specified in DIN 13 Part 14. It specifies limits of size for fine screw threads within the range 252 to 1000 mm nominal screw thread diameter, together with the commonly used tolerance classes.
