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Center Drill Chart

                 
  Body Diameter Drill Diameter Drill Length Overall Length
Size Inches MM Inches MM Inches MM Inches MM
00 .125 3.18 .025 .64 .030 .76 1.125 29
0 .125 3.18 .0312 .79 .038 .97 1.125 29
1 .125 3.18 .0468 1.19 .0468 1.19 1.250 32
2 .1875 4.76 .0781 1.98 .0781 1.98 1.875 48
3 .250 6.35 .1093 2.78 .1093 2.78 2.0 51
4 .3125 7.94 .125 3.18 .125 3.18 2.125 54
5 .4375 11.11 .1875 4.76 .1875 4.76 2.750 70
6 .500 12.70 .2187 5.56 .2187 5.56 3.0 76
7 .625 15.88 .250 6.35 .25 6.35 3.250 83
8 .750 19.05 .3125 7.94 .3125 7.94 3.500 89
9 .875 22.22 .3437 8.73 .3437 8.73 3.625 92
10 1.000 25.40 .375 9.52 .375 9.52 3.750 95