495TAPS丝锥螺纹尺寸Threadsize推荐底孔径Recommendeddrillholedia.最小底孔径Min.drillholedia.最大底孔径Max.drillholedia.各精度通用前JIS2級用4H用5H用6H用M1×0.250.750.730.780.770.78ー1×0.20.80.79ー0.82ーー1.1×0.250.850.830.880.870.88ー1.1×0.20.90.89ー0.92ーー1.2×0.250.950.930.980.970.98ー1.2×0.210.99ー1.02ーー1.4×0.31.11.081.141.121.141.161.4×0.21.21.19ー1.22ーー1.6×0.351.251.231.321.281.31.321.6×0.21.41.39ー1.42ーー1.7×0.31.4ーーーーー1.7×0.251.45ーーーーー1.7×0.21.5ーーーーー1.8×0.351.451.431.521.481.51.521.8×0.21.61.59ー1.62ーー2×0.41.61.571.671.631.651.672×0.251.751.73ー1.77ーー2.2×0.451.751.721.831.791.811.832.2×0.251.951.93ー1.97ーー2.3×0.41.9ーーーーー2.3×0.351.95ーーーーー2.3×0.252.05ーーーーー2.5×0.452.052.022.132.092.112.132.5×0.352.152.132.222.182.22.222.6×0.452.15ーーーーー2.6×0.352.25ーーーーー3×0.52.52.462.592.542.572.593×0.352.652.632.722.682.72.723.5×0.62.92.853.012.952.973.013.5×0.353.153.133.223.183.23.224×0.73.33.253.423.353.383.424×0.53.53.463.593.543.573.594.5×0.753.753.693.873.83.833.874.5×0.543.964.094.044.074.095×0.94.1ーーーーー5×0.84.24.144.334.254.294.335×0.54.54.464.594.544.574.595.5×0.94.6ーーーーー5.5×0.754.75ーーーーー5.5×0.554.965.095.045.075.096×154.925.155.065.15.156×0.755.255.195.375.35.335.376×0.55.5ーーーーー7×165.926.156.066.16.157×0.756.256.196.376.36.336.377×0.56.5ーーーーー8×1.256.756.656.916.816.856.918×176.927.157.067.17.158×0.757.257.197.377.37.337.378×0.57.5ーーーーー9×1.257.757.657.917.817.857.919×187.928.158.068.18.159×0.758.258.198.378.38.338.379×0.58.5ーーーーー10×1.58.58.388.678.568.618.6710×1.258.758.658.918.818.858.9110×198.929.159.069.19.1510×0.759.259.199.379.39.339.3710×0.59.5ーーーーー11×1.59.59.389.679.569.619.6711×1109.9210.1510.0610.110.1511×0.7510.2510.1910.3710.310.3310.3711×0.510.5ーーーーー12×1.7510.2510.1110.4410.3110.3710.4412×1.510.510.3810.6710.5610.6110.6712×1.2510.7510.6510.9110.8110.8510.9112×11110.9211.1511.0611.111.1512×0.7511.25ーーーーー12×0.511.5ーーーーー公制螺纹MetricscrewthreadsJISB0209-1982（单位：mm）（Unit：mm）※推荐底孔径为前JIS2级内螺纹用。（有的规格除外）※JIS规格中没有的内螺纹底孔为参考值。（单位：mm）（Unit：mm）螺纹尺寸Threadsize推荐底孔径Recommendeddrillholedia.最小底孔径Min.drillholedia.最大底孔径Max.drillholedia.各精度通用前JIS2級用4H用5H用6H用13×1.7511.25ーーーーー13×1.511.5ーーーーー13×1.2511.75ーーーーー13×112ーーーーー13×0.7512.3ーーーーー13×0.512.5ーーーーー14×21211.8412.211212.112.214×1.512.512.3812.6712.5612.6112.6714×11312.9213.1513.0613.113.1514×0.7513.3ーーーーー14×0.513.5ーーーーー15×213ーーーーー15×1.513.513.413.613.513.613.615×1.2513.813.713.9ーーー15×11413.9514.1514.0614.114.1515×0.7514.3ーーーーー15×0.514.5ーーーーー16×21413.914.21414.114.216×1.514.514.414.614.514.614.616×11514.9515.1515.0615.115.1517×215ーーーーー17×1.515.515.415.6815.515.615.617×1.2515.8ーーーーー17×11615.9516.1516.0616.116.1517×0.7516.3ーーーーー17×0.516.5ーーーーー18×2.515.515.315.715.515.615.718×21615.916.21616.116.218×1.516.516.416.616.516.616.618×11716.9517.1517.0617.117.1519×2.516.5ーーーーー19×217ーーーーー19×1.517.5ーーーーー19×1.2517.8ーーーーー19×118ーーーーー19×0.7518.3ーーーーー19×0.518.5ーーーーー20×2.517.517.317.717.517.617.720×21817.918.21818.118.220×1.518.518.418.618.518.618.620...
