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Decimal Equivalents
All Standard Drill Size Bushings are Indicated in Green
| mm | Decimal | | mm | Decimal | | mm | Decimal | | mm | Decimal | | mm | Decimal |
| .35 | .0138" | | .90 | .0354" | | 1.45 | .0571" | | 2.00 | .0787" | | 2.55 | .1004" |
| .40 | .0157" | | .95 | .0374" | | 1.50 | .0591" | | 2.05 | .0807" | | 2.60 | .1024" |
| .45 | .0177" | | 1.0 | .0394" | | 1.55 | .0610" | | 2.10 | .0827" | | 2.65 | .1043" |
| .50 | .0197" | | 1.05 | .0413" | | 1.60 | .0630" | | 2.15 | .0846" | | 2.70 | .1063" |
| .55 | .0217" | | 1.10 | .0433" | | 1.65 | .0650" | | 2.20 | .0866" | | 2.75 | .1083" |
| .60 | .0236" | | 1.15 | .0453" | | 1.70 | .0669" | | 2.25 | .0886'' | | 2.80 | .1102" |
| .65 | .0256" | | 1.20 | .0472" | | 1.75 | .0689" | | 2.30 | .0906" | | 2.85 | .1142" |
| .70 | .0276" | | 1.25 | .0492" | | 1.80 | .0709" | | 2.35 | .0925" | | 2.90 | .1181" |
| .75 | .0295" | | 1.30 | .0512" | | 1.85 | .0728" | | 2.40 | .0945" | | 3.00 | .1181" |
| .80 | .0315" | | 1.35 | .0531" | | 1.90 | .0748" | | 2.45 | .0965" | | 3.10 | .1220" |
| .85 | .0335" | | 1.40 | .0551" | | 1.95 | .0768" | | 2.50 | .0984" | | 3.20 | .1260" |
| mm | Decimal | | mm | Decimal | | mm | Decimal | | mm | Decimal | | mm | Decimal |
| 3.25 | .1280" | | 4.1 | .1614" | | 4.9 | .1929" | | 5.75 | .2264" | | 6.6 | .2598" |
| 3.30 | .1299" | | 4.2 | .1654" | | 5 | .1969" | | 5.8 | .2283" | | 6.7 | .2638" |
| 3.40 | .1339" | | 4.25 | .1673" | | 5.1 | .2008" | | 5.9 | .2323" | | 6.75 | .2657" |
| 3.50 | .1378" | | 4.3 | .1693" | | 5.2 | .2047" | | 6 | .2362" | | 6.8 | .2677" |
| 3.6 | .1417" | | 4.4 | .1732" | | 5.25 | .2067" | | 6.1 | .2402" | | 6.9 | .2717" |
| 3.7 | .1457" | | 4.5 | .1772" | | 5.3 | .2087" | | 6.2 | .2441" | | 7 | .2756" |
| 3.75 | .1476" | | 4.6 | .1811" | | 5.4 | .2126" | | 6.25 | .2461" | | 7.1 | .2795" |
| 3.8 | .1496" | | 4.7 | .1850" | | 5.5 | .2165" | | 6.3 | .2480" | | 7.2 | .2835" |
| 3.9 | .1535" | | 4.75 | .1870" | | 5.6 | .2205" | | 6.4 | .2520" | | 7.25 | .2854" |
| 4 | .1575" | | 4.8 | .1890" | | 5.7 | .2244" | | 6.5 | .2559" | | 7.3 | .2874" |
| mm | Decimal | | mm | Decimal | | mm | Decimal | | mm | Decimal | | mm | Decimal |
| 7.4 | .2913" | | 8.25 | .3248" | | 9.1 | .3583" | | 9.9 | .3898" | | 14.5 | .5709" |
| 7.5 | .2953" | | 8.3 | .3268" | | 9.2 | .3622" | | 10 | .3937" | | 15 | .5906" |
| 7.6 | .2992" | | 8.4 | .3307" | | 9.25 | .3642" | | 10.5 | .4134" | | 15.5 | .6102" |
| 7.7 | .3031" | | 8.5 | .3346" | | 9.3 | .3661" | | 11 | .4331" | | 16 | .6229" |
| 7.75 | .3051" | | 8.6 | .3386" | | 9.4 | .3701" | | 11.5 | .4528" | | 16.5 | .6496" |
| 7.8 | .3071" | | 8.7 | .3425" | | 9.5 | .3740" | | 12 | .4724" | | 17 | .6693" |
| 7.9 | .3110" | | 8.75 | .3445" | | 9.6 | .3780" | | 12.5 | .4921" | | 17.5 | .6890" |
| 8 | .3150" | | 8.8 | .3465" | | 9.7 | .3819" | | 13 | .5118" | | 18 | .7087" |
| 8.1 | .3189" | | 8.9 | .3504" | | 9.75 | .3839" | | 13.5 | .5315" | | 18.5 | .7283" |
| 8.2 | .3228" | | 9 | .3543" | | 9.8 | .3858" | | 14 | .5512" | | 19 | .7480" |
| mm | Decimal | | mm | Decimal | | mm | Decimal |
| 19.5 | .7677" | | 21.5 | .8465" | | 23.5 | .9252" |
| 20 | .7874" | | 22 | .8661" | | 24 | .9449" |
| 20.5 | .8071" | | 22.5 | .8858" | | 24.5 | .9646" |
| 21 | .8268" | | 23 | .9055" | | 25 | .9843" |
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