25. Drill size and recommended hole size for forming taps

Metric Coarse Threads (M) Unit: mm Metric Fine Threads (MF) Unit: mm

SP

SizeClassTol.Minor Diam Max.eter Min.Drill SizeRecom Hole Max.mended Size Min.SizeClass Tol.Minor Diam Max.eter Min.Drill SizeRec Ma
M1025ISO2X6H(0.785)(0.729)0.910.920.89MF6× 075ISO2X 6H5.3785.1885.675.7
.ISO3X6G(0.803)(0.747)0.920.930.91.ISO3X 6G5.4005.2105.705.7
M12025ISO2X6H(0.985)(0.929)1.111.121.09MF605ISO2X 6H5.5995.4595.785.8
..ISO3X6G(1.003)(0.947)1.121.131.11× .ISO3X 6G5.6195.4795.805.8
M1403ISO2X6H1.1421.0751.271.281.25MF8× 1ISO2X 6H7.1536.9177.557.6
..ISO3X6G1.1601.0931.291.31.27ISO3X 6G7.1796.9437.597.6
M16035ISO2X6H1.3211.2211.461.481.43MF10125ISO2X 6H8.9128.6479.459.5
..ISO3X6G1.3401.2401.471.491.44× .ISO3X 6G8.9408.6759.479.5
M17035ISO2X6H1.4211.3211.551.571.53MF10× 1ISO2X 6H9.1538.9179.559.6
..ISO3X6G1.4401.3401.571.591.54ISO3X 6G9.1798.9439.599.6
M18× 035ISO2X6H1.5211.4211.651.671.62MF12× 15ISO2X 6H10.67610.37611.3211.3
..ISO3X6G1.5401.4401.671.691.64.ISO3X 6G10.70810.40811.3511.4
M204ISO2X6H1.6791.5671.831.861.80MF12125ISO2X 6H10.91210.64711.4511.5
.ISO3X6G1.6981.5861.851.871.82× .ISO3X 6G10.94010.67511.4611.5
ISO2X6H1.8381.7132.012.041.97ISO2X 6H11.15310.91711.5611.6
M2.2× 0.45ISO3X6G1.8581.7332.032.061.99MF12× 1ISO3X 6G11.17910.94311.5711.6
M2304ISO2X6H1.9791.8672.132.162.10MF14× 15ISO2X 6H12.67612.37613.3213.3
..ISO3X6G1.9981.8862.152.172.12.ISO3X 6G12.70812.40813.3513.4
ISO2X6H2.1382.0132.312.342.27ISO2X 6H13.15312.91713.5513.6
M2.5× 0.45ISO3X6G2.1582.0332.342.372.31MF14× 1ISO3X 6G13.17912.94313.5713.6
M26× 045ISO2X6H2.2382.1132.412.442.37MF16× 15ISO2X 6H14.67614.37615.3115.3
..ISO3X6G2.2582.1332.442.472.41.ISO3X 6G14.70814.40815.3415.4
M305ISO2X6H2.5992.4592.802.832.76MF161ISO2X 6H15.15314.91715.5515.6
.ISO3X6G2.6192.4792.822.852.78×ISO3X 6G15.17914.94315.5615.6
ISO2X6H3.0102.8503.253.293.21ISO2X 6H16.67616.37617.3117.3
M3.5× 0.6ISO3X6G3.0312.8713.273.313.23MF18× 1.5ISO3X 6G16.70816.40817.3417.4
ISO2X6H3.4223.2423.713.753.66ISO2X 6H18.67618.37619.3019.3
M4× 0.7ISO3X6G3.4443.2643.733.773.68MF20× 1.5ISO3X 6G18.70818.40819.3419.4
ISO2X6H4.3344.1344.654.704.60
M5× 0.8ISO3X6G4.3584.1584.674.724.62
M61ISO2X6H5.1534.9175.565.615.50
×
ISO3X6G5.1794.9435.605.655.54
ISO2X6H6.9126.6477.457.527.38
M8× 1.25ISO3X6G6.9406.6757.477.537.40h
M1015ISO2X6H8.6768.3769.349.419.26Minaturetreas (S)Unit: mm
.Recommended
ISO3X6G8.7088.4089.379.449.29l Si
ISO2X6H10.44110.10611.2211.311.13Sizeoe ze
M12× 1.75ISO3X6G10.47510.14011.2511.3311.16Max.Min.
M2ISO2X6H12.21011.83513.1013.1913.00S0.6X0.150.550.54
14×ISO3X6G12.24811.87313.1413.2313.04S0.7X0.1750.640.62
ISO2X6H14.21013.83515.1015.1915.00S0.8X0.20.730.71
M16× 2ISO3X6G14.24813.87315.1415.2315.04S0.9X0.2250.820.80
SizeClassMinor DiameterDrill SizeRecom Holemended Size
Tol.Max.Min.Max.Min.
MF6×0.75ISO2X6H5.3785.1885.675.725.62
ISO3X6G5.4005.2105.705.755.65
MF6×0.5ISO2X6H5.5995.4595.785.815.74
ISO3X6G5.6195.4795.805.835.76
MF8×1ISO2X6H7.1536.9177.557.617.49
ISO3X6G7.1796.9437.597.657.53
MF10×125ISO2X6H8.9128.6479.459.519.38
.ISO3X6G8.9408.6759.479.539.40
MF10×1ISO2X6H9.1538.9179.559.619.49
ISO3X6G9.1798.9439.599.659.53
MF12×15ISO2X6H10.67610.37611.3211.3911.24
.ISO3X6G10.70810.40811.3511.4211.27
MF12×125ISO2X6H10.91210.64711.4511.5111.38
.ISO3X6G10.94010.67511.4611.5211.39
MF12×1ISO2X6H11.15310.91711.5611.6211.50
ISO3X6G11.17910.94311.5711.6311.51
MF14×15ISO2X6H12.67612.37613.3213.3913.24
.ISO3X6G12.70812.40813.3513.4213.27
MF14×1ISO2X6H13.15312.91713.5513.6113.49
ISO3X6G13.17912.94313.5713.6213.51
MF16×15ISO2X6H14.67614.37615.3115.3815.23
.ISO3X6G14.70814.40815.3415.4115.26
MF16×1ISO2X6H15.15314.91715.5515.6115.49
ISO3X6G15.17914.94315.5615.6215.50
MF1815ISO2X6H16.67616.37617.3117.3817.23
×.ISO3X6G16.70816.40817.3417.4117.26
MF201ISO2X6H18.67618.37619.3019.3719.22
×.5ISO3X6G18.70818.40819.3419.4119.26

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