|  
             Section diameter 
              tolerance and least size 
            
               
                | Section diameter(d2) | 
                 Section tolerance¡À | 
                Inside diameter(d1) | 
               
               
                |  
                   1.80 
                 | 
                0.08 | 
                £¾6.00 | 
               
               
                |  
                   2.00 
                 | 
                0.09 | 
                £¾10.50 | 
               
               
                |  
                   2.62¡¡2.65 
                 | 
                0.09 | 
                £¾10.80 | 
               
               
                |  
                    3.00 ¡¡¡¡ 
                 | 
                0.10 | 
                £¾12.00 | 
               
               
                |  
                   3.53¡¡3.55 
                 | 
                0.10 | 
                £¾13.20 | 
               
               
                |  
                    4.00¡¡ 
                 | 
                0.10 | 
                £¾20.00 | 
               
               
                |  
                   4.50 
                 | 
                0.10 | 
                £¾25.00 | 
               
               
                |  
                   4.70 
                 | 
                0.10 | 
                £¾28.00 | 
               
               
                |  
                   5.00 
                 | 
                0.10 | 
                £¾30.00 | 
               
               
                |  
                   5.33¡¡5.30 
                 | 
                0.13 | 
                £¾30.00 | 
               
               
                |  
                   5.50¡¡5.70 
                 | 
                0.13 | 
                £¾50.00 | 
               
               
                |  
                   6.00¡¡6.30 
                 | 
                0.15 | 
                £¾50.00 | 
               
               
                |  
                   7.00 
                 | 
                0.15 | 
                £¾65.00 | 
               
               
                |  
                    8.00¡¡ 
                 | 
                0.15 | 
                £¾70.00 | 
               
               
                |  
                   8.40¡¡8.60 
                 | 
                0.15 | 
                £¾75.00 | 
               
               
                |  
                   10.00 
                 | 
                0.18 | 
                £¾80.00 | 
               
               
                |  
                   12.00 
                 | 
                0.18 | 
                £¾100.00 | 
               
               
                |  
                   14.00¡¡16.00 
                 | 
                0.18 | 
                £¾200.0 | 
               
               
                |  
                   25.00 
                 | 
               
             
              
            Inside diameter tolerance 
            
            
               
                |  Inside diameter(d1) | 
                 
                   Tolerance¡À 
                 | 
               
               
                |  
                   £¼50 
                 | 
                 
                   0.25 
                 | 
               
               
                |  
                   £¼100 
                 | 
                 
                   0.38 
                 | 
               
               
                |  
                   £¼250 
                 | 
                 
                   0.63 
                 | 
               
               
                |  
                   £¼500 
                 | 
                 
                   0.76 
                 | 
               
               
                |  
                   £¼1000 
                 | 
                 
                   1.58 
                 | 
               
             
            
           |