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タップ下穴表

メートルねじ用タップ下穴ドリル径表

呼 び 径ドリル径下穴径呼び径ドリル径下穴径呼び径ドリル径下穴径
MaxMinMaxMinMaxMin
M1.4X0.31.101.1421.075M5x0.84.24.334.13M18x216.016.2115.84
M1.4x0.21.201.221.18M5x0.54.54.604.46M18x1.516.516.6816.38
M1.6x0.351.251.321.22M6x15.05.154.92M18x117.017.1516.92
M1.6x0.21.401.421.38M6x0.755.35.385.19M20x2.517.517.7417.29
M1.7x0.351.351.421.32M6x0.55.55.555.40M20x218.018.2117.84
M1.7x0.21.451.501.46M8x1.256.86.9126.65M20x1.518.518.6818.38
M1.8x0.351.451.521.42M8x17.07.156.92M20x119.019.1518.92
M1.8x0.21.601.621.58M8x0.757.37.387.19M22x220.020.2119.84
M2X0.41.601.681.57M8x0.57.57.527.40M22x1.520.520.6820.38
M2x0.251.751.791.73M10x1.58.58.688.38M22x121.021.1520.92
M2.2x0.451.751.841.71M10x1.258.88.918.65M24x321.021.2520.75
M2.2x0.251.951.991.93M10x19.09.158.92M24x222.022.2121.84
M2.3x0.41.901.981.87M10x0.759.39.389.19M24x1.522.522.6822.38
M2.3x0.252.052.062.00M10x0.59.59.529.40M24x123.023.1522.92
M2.5x0.452.102.142.01M12x1.7510.310.4410.11M25x223.023.2122.84
M2.5x0.352.202.222.12M12x1.510.510.6810.38M25x1.523.523.6823.38
M2.6x0.452.202.242.11M12x1.2510.810.9110.65M25x124.024.1523.92
M2.6x0.352.202.252.19M12x111.011.1510.92M26x1.524.524.6824.38
M3x0.52.502.602.46M12x0.511.511.5211.40M27x324.024.2523.75
M3x0.352.702.722.62M14x212.012.2111.84M27x225.025.2124.84
M3.5x0.62.903.012.85M14x1.512.512.6812.38M28x226.026.2125.84
M3.5x0.353.203.223.12M14x113.013.1512.92M28x1.526.526.6826.38
M4x0.73.303.423.24M16x214.014.2113.84M30x3.526.526.7726.21
M4x0.53.503.603.46M16x1.514.514.6814.38M30x327.027.2526.75
M4.5x0.753.803.883.69M16x115.015.1514.92M30x228.028.2127.84
M4.5x0.54.04.103.96M18x2.515.515.7415.29M32x230.030.2129.84
呼び径ドリル径下穴径呼び径ドリル径下穴径呼び径ドリル径下穴径
MaxMinMaxMinMaxMin

インチねじ用タップ下穴ドリル径表

*****ウィットねじ********管用テーパーねじ********管用ストレートねじ***
呼 び 径下 穴 ド リ ル呼 び 径下 穴 ド リ ル呼 び 径下 穴 ド リ ル
M a xM i nM a xM i nM a xM i n
1/8w402.652.6PT1/8-286.2446.384PS1/8-288.6378.495
1/4w205.15.0PT1/4-1910.96211.174PS1/4-1911.54911.341
3/8w168.07.9PT3/8-1914.44814.658PS3/8-1815.05414.846
1/2w1210.710.5PT1/2-1417.97918.263PS1/2-1418.77318.489
3/4w1016.716.5PT3/4-1423.37823.663PS3/4-1424.25923.975
1w822.422.0PT1-1129.45929.822PS1-1130.47230.110

タフレット(盛上げタップ)下穴ドリル径表

呼 び 径精度下 穴 径呼 び 径精度下 穴 径呼 び 径精度下 穴 径
MaxMinMaxMinMaxMin
M2x0.4G 41.841.79M5x0.8G 64.674.59M12x1.75G 811.2311.09
M2.6x0.45G 52.442.37M6x1G 75.595.49M14x2G1013.1412.98
M3x0.5G 52.822.75M8x1.25G 77.497.36M16x2G1015.1414.97
M4x0.7G 63.723.65M10x1.5G 79.349.22M18x2.5G1116.9316.73

ヘリサートタップ下穴ドリル径表

呼 び 径ドリル径下 穴 径呼 び 径ドリル径下 穴 径呼 び 径ドリル 径下 穴 径
MaxMinMaxMinMaxMin
M2x0.42.12.162.10M5x0.85.25.335.16M14x2.014.514.8314.49
M2.5x0.452.62.662.60M6x1.06.36.426.25M16x2.016.516.8316.49
M2.6x0.452.82.852.77M8x1.258.48.528.31M18x2.519.019.0418.58
M3x0.53.13.203.12M10x1.510.510.6210.37M20x2.521.021.0420.58
M4x0.74.24.304.17M12x1.7512.512.7312.43M30x3.531.031.4630.82

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