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 |