  | 
          | 
    
    
        | Tap | 
        Metric Drill | 
        Tap | 
        Die | 
    
    
   
        | 3mm x 0.5 | 
        2.5mm | 
                  | 
                 | 
    
   
        | 4mm x 0.7 | 
        3.4mm | 
                  | 
                 | 
    
   
        | 5mm x 0.8 | 
        4.3mm | 
                  | 
                 | 
    
   
        | 6mm x 1.0 | 
        5.2mm | 
          | 
                 | 
    
            
                | 7mm x 0.75 | 
                6.1mm | 
                 | 
                  | 
            
   
        | 7mm x 1.0 | 
        6.1mm | 
                  | 
                 | 
    
   
        | 8mm x 1.25 | 
        6.9mm | 
                  | 
                 | 
    
   
        | 8mm x 1.0 | 
        7.1mm | 
                 | 
                 | 
    
   
        | 10mm x 1.5 | 
        8.7mm | 
                  | 
                 | 
    
   
        | 10mm x 1.25 | 
        8.9mm | 
         | 
                 | 
    
   
        | 10mm x 1.0 | 
        9.1mm | 
                 | 
                 | 
    
   
        | 12mm x 1.75 | 
        10.5mm | 
                  | 
                 | 
    
   
        | 12mm x 1.5 | 
        10.7mm | 
                 | 
                 | 
    
   
        | 14mm x 1.0 | 
        12.5mm | 
                  | 
                  | 
    
            
                | 18mm x 2.5 | 
                15.5mm | 
                 | 
                  | 
            
    
     
    
    
        
        
    
        
             
         | 
        
             
         | 
    
    
        | UNC Tap x TPI | 
        Imperial Drill | 
        Metric equivalent | 
        Tap | 
        Die | 
    
    
    
   
        | 1 x 64 | 
        53 | 
                    1.5mm | 
                     | 
                     | 
    
   
        | 2 x 56 | 
        50 | 
                    1.8mm | 
                     | 
    
   
        | 3 x 48 | 
        47 | 
                    2.1mm | 
                     | 
                     | 
    
   
        | 4 x 40 | 
        43 | 
        2.3mm | 
                     | 
                     | 
    
   
        | 5 x 40 | 
        38 | 
                    2.6mm | 
                     | 
                     | 
    
   
        | 6 x 32 | 
        36 | 
        2.8mm | 
                     | 
                     | 
    
   
        | 8 x 32 | 
        29 | 
                    3.4mm | 
                     | 
                     | 
    
   
        | 10 x 24 | 
        25 | 
                    3.8mm | 
                     | 
                     | 
    
   
        | 12 x 24 | 
        16 | 
                    4.4mm | 
                     | 
                     | 
    
   
        | 1/4 x 20 | 
        7 | 
                    5.1mm | 
                      | 
                     | 
    
   
        | 5/16 x 18 | 
        F | 
                    6.5mm | 
                      | 
                      | 
    
   
        | 3/8 x 16 | 
        5/16 | 
                    8.0mm | 
                     | 
                     | 
    
   
        | 7/16 x 14 | 
        U | 
                    9.5mm | 
                     | 
                     | 
    
   
        | 1/2 x 13 | 
        27/64 | 
                    11.0mm | 
                     | 
                     | 
    
    
 
     
        
        
            
    
        
             
         | 
        
             
         | 
    
    
        | UNF Tap x TPI | 
        Imperial Drill | 
        Metric equivalent | 
        Tap | 
        Die | 
    
            
   
        | 0 x 80 | 
        3/68 | 
                1.1mm | 
                 | 
                 | 
    
   
        | 1 x 72 | 
        53 | 
                1.5mm | 
                 | 
                 | 
    
   
        | 2 x 64 | 
        50 | 
                1.8mm | 
                 | 
                 | 
    
   
        | 3 x 56 | 
        45 | 
                2.2mm | 
                 | 
                 | 
    
   
        | 4 x 48 | 
        42 | 
                2.4mm | 
                 | 
                 | 
    
   
        | 5 x 44 | 
        37 | 
                2.7mm | 
                 | 
                 | 
    
   
        | 6 x 40 | 
        33 | 
                2.9mm | 
                 | 
                 | 
    
   
        | 8 x 36 | 
        29 | 
                3.5mm | 
                 | 
                 | 
    
   
        | 10 x 32 | 
        21 | 
                4.0mm | 
                 | 
                 | 
    
   
        | 12 x 28 | 
        14 | 
                4.6mm | 
                 | 
                 | 
    
   
        | 1/4 x 28 | 
        3 | 
                5.4mm | 
                 | 
                 | 
    
   
        | 5/16 x 24 | 
        I | 
                6.8mm | 
                  | 
                 | 
    
   
        | 3/8 x 24 | 
        Q | 
                8.4mm | 
                  | 
                  | 
    
   
        | 7/16 x 20 | 
        25/64 | 
                9.8mm | 
                 | 
                 | 
    
   
        | 1/2 x 20 | 
        29/64 | 
                11.5mm | 
                  | 
                  | 
    
            
                | 1/2 x 28 | 
                29/64 | 
                11.5mm | 
                  | 
                 |