A 
              内径范围 (标准钻头尺寸)                | 
            B 
              主体外径  | 
            C 
              长度 
              (全长)                | 
            订购标识  | 
            
          
            菱形槽型 
              (型号 DG)                | 
            齿面槽型 
              (型号 SG)                | 
            花键锁紧型 
              (型号 SL)                | 
          
          
            小数尺寸  | 
            件号,字母, 
              以分数表示的尺寸+                 | 
            公称尺寸  | 
            磨前尺寸   | 
            
          
            DG&SG  | 
            SL  | 
            
  
            .0980 
              to 
              .1406  | 
            #40 to #28 
              7/64 to 9/64  | 
            1/4  | 
            .275 
              .260  | 
            .2500 
              .2498  | 
            ?1/4 
              5/16 
              3/8 
              1/2  | 
            DG-16-4 
              DG-16-5 
              DG-16-6 
              DG-16-8  | 
            SG-16-4 
              SG-16-5 
              SG-16-6 
              SG-16-8  | 
            SL-16-4 
              SL-16-5 
              SL-16-6 
              SL-16-8  | 
          
   
            .1406 
              to 
              .1935  | 
            #27 to #10 
              9/64 to 3/16  | 
            5/16  | 
            .337 
              .322  | 
            .3125 
              .3123  | 
            1/4 
              5/16 
              3/8 
              1/2 
              3/4  | 
            DG-20-4 
              DG-20-5 
              DG-20-6 
              DG-20-8 
              DG-20-12  | 
            SG-20-4 
              SG-20-5 
              SG-20-6 
              SG-20-8 
              SG-20-12  | 
            SL-20-5 
              SL-20-6 
              SL-20-8 
              SL-20-12  | 
          
  
            .1875 
              to 
              .2570  | 
            #12 to #1 
              “A” to “F” 
              3/16 to 1/4  | 
            13/32  | 
            .431 
              .416  | 
            .4062 
              .4060  | 
            SL-20-5 
              SL-20-6 
              SL-20-8 
              SL-20-12  | 
            DG-26-4 
              DG-26-5 
              DG-26-6 
              DG-26-8 
              DG-26-12  | 
            SG-26-4 
              SG-26-5 
              SG-26-6 
              SG-26-8 
              SG-26-12  | 
            SL-26-5 
              SL-26-6 
              SL-26-8 
              SL-26-12  | 
          
   
            .2500 
              to 
              .3160  | 
            “F” to “O” 
              1/4 to 5/16  | 
            1/2  | 
            .525 
              .510  | 
            .5000 
              .4998  | 
            5/16 
              3/8 
              1/2 
              3/4  | 
            DG-32-5 
              DG-32-6 
              DG-32-8 
              DG-32-12  | 
            SG-32-5 
              SG-32-6 
              SG-32-8 
              SG-32-12  | 
            SL-32-5 
              SL-32-6 
              SL-32-8 
              SL-32-12  | 
          
  
            .3125 
              to 
              .4375  | 
            “O” to “Z” 
              5/16 to 7/16  | 
            5/8  | 
            .650 
              .635  | 
            .6250 
              .6248  | 
            3/8 
              1/2 
              3/4 
              1 
              1-3/8  | 
            DG-40-6 
              DG-40-8 
              DG-40-12 
              DG-40-16 
              DG-40-22  | 
            SG-40-6 
              SG-40-8 
              SG-40-12 
              SG-40-16 
              SG-40-22  | 
            SL-40-6 
              SL-40-8 
              SL-40-12 
              SL-40-16  | 
          
   
            .4375  
              to 
              .5312  | 
            7/16 to 17/32  | 
            3/4  | 
            .775 
              .760  | 
            .7500 
              .7498  | 
            3/8 
              1/2 
              3/4 
              1 
              1-3/8  | 
            DG-48-6 
              DG-48-8 
              DG-48-12 
              DG-48-16 
              DG-48-22  | 
            SG-48-6 
              SG-48-8 
              SG-48-12 
              SG-48-16 
              SG-48-22  | 
            SL-48-6 
              SL-48-8 
              SL-48-12 
              SL-48-16  | 
          
  
            .5000 
              to 
              .6562  | 
            1/2 to 21/32  | 
            7/8  | 
            .900 
              .885  | 
            .8750 
              .8748  | 
            3/8 
              1/2 
              3/4 
              1 
              1-3/8  | 
            DG-56-6 
              DG-56-8 
              DG-56-12 
              DG-56-16 
              DG-56-22  | 
            SG-56-6 
              SG-56-8 
              SG-56-12 
              SG-56-16 
              SG-56-22  | 
            SL-56-6 
              SL-56-8 
              SL-56-12 
              SL-56-16  | 
          
   
            .6250 
              to 
              .7656  | 
            5/8 to 49/64  | 
            1"  | 
            1.025 
              1.010  | 
            1.0000 
              .9998  | 
            1/2 
              3/4 
              1 
              1-3/8  | 
            DG-64-8 
              DG-64-12 
              DG-64-16 
              DG-64-22  | 
            SG-64-8 
              SG-64-12 
              SG-64-16 
              SG-64-22  | 
            SL-64-8 
              SL-64-12 
              SL-64-16 
              SL-64-22  | 
          
        
          + 内径尺寸以分数表示, 为1/64英寸的倍数 (除非另有指明)