Standard_Parts_Catalogue

| Extract from DIN / ISO Standard Page 2149 DIN 13 Metric ISO Thread Extract Tolerance Fields 6g / 6H Nominal thread Ø Gradient P Bolt thread 6g Nut thread 6H Major Ø d Pitch Ø d 2 Minor Ø d 1 Major Ø D Pitch Ø D 2 Minor Ø D 1 Max. Min. Max. min. max. min. min. max. min. max. min. max. M  3 0,5 2,980 2,874 2,655 2,580 2,367 2,273 3,000 not specified  2,675 2,775 2,459 2,599 M  4 0,7 3,978 3,838 3,523 3,433 3,119 3,002 4,000  3,545 3,663 3,242 3,422 M  5 0,8 4,976 4,826 4,456 4,361 3,995 3,869 5,000  4,480 4,605 4,134 4,334 M  6 1 5,974 5,794 5,324 5,212 4,747 4,596 6,000  5,350 5,500 4,917 5,153 M  8 1,25 7,972 7,760 7,160 7,042 6,438 6,272 8,000  7,188 7,348 6,647 6,912 M 10 1,5 9,968 9,732 8,994 8,862 8,128 7,938 10,000  9,026 9,206 8,376 8,676 M 12 1,75 11,966 11,701 10,829 10,679 9,819 9,602 12,000 10,863 11,063 10,106 10,441 M 14 2 13,962 13,682 12,663 12,503 11,508 11,271 14,000 12,701 12,913 11,835 12,210 M 16 2 15,962 15,682 14,663 14,503 13,508 13,274 16,000 14,701 14,913 13,835 14,210 M 20 2,5 19,958 19,623 18,334 18,164 16,891 16,625 20,000 18,376 18,600 17,294 17,744 M 24 3 23,952 23,577 22,003 21,803 20,271 19,955 24,000 22,051 22,316 20,752 21,252 The limit dimensions for standard threads given in the table correspond to the - tolerance field 6g for bolt threads - tolerance field 6H for nut threads. The metric steel / metal threads specified in this catalog are based on these tolerance fields. For threads with surface or heat treatment (e.g. sandblasting, powder coating, zinc plating, tempering, etc.), it may not be possible to comply with the listed tolerance fields in individual cases for process-related reasons. However, this does not have any negative impact on the function since the threads will still fit the corresponding screws or nuts. For threads in plastic standard parts (without steel or metallic thread insert), these tolerances can usually not be main- tained for manufacturing reasons. Description