METRIC THREAD PITCH CHART FOR GENERAL ENGINEERING USE


Some of the selected metric thread pitch sizes for general engineering use are given in the following chart. This chart is prepared according to data given in the ISO 262:1998 standard.



Nominal Diameter (D,d) Pitch (P)
1st choice 2nd choice coarse fine
M1.6   0.35    
  M1.8 0.35    
M2   0.4    
M2.5   0.45    
M3   0.5    
  M3.5 0.6    
M4   0.7    
M5   0.8    
M6   1    
  M7 1    
M8   1.25 1  
M10   1.5 1.25 1
M12   1.75 1.5 1.25
  M14 2 1.5  
M16   2 1.5  
  M18 2.5 2 1.5
M20   2.5 2 1.5
  M22 2.5 2 1.5
M24   3 2  
M30   3.5 2  
M36   4 3  
M42   4.5 3  
M48   5 3  
M56   5.5 4  
  M60 5.5 4  
M64   6 4  
Selected metric sizes for general engineering use


Reference:
  • ISO 262:1998 (E) -  ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts