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Tapping Drill Sizes

Metric Coarse all dimensions in mm

Tap SizeDrill Size
M2 x 0.41.6
M2.5 x 0.452.05
M3 x 0.52.5
M3.5 x 0.62.9
M4 x 0.73.3
M4.5 x 0.753.7
M5 x 0.84.2
M6 x 1.05.0
M7 x 1.06.0
M8 x 1.256.8
M9 x 1.257.8
M10 x 1.58.5
M11 x 1.59.5
M12 x 1.7510.2
M14 x 2.012
M16 x 2.014
M18 x 2.515.5
M20 x 2.517.5

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