ーExcerpt from JIS B 1004（1975）ー （2）Hole diameter of thread＝d−2×（thread working rate／100） （3）Allowed dimension range of screw thread ID. excerpts from JIS B 0209（allowed dimension range and tolerance of metric coarse thread）. ■：5H or grade 1 Note：■■■is the allowed dimension range, its classification is as follow. ■：6H or grade 2 （4）H1＝0.541266P （5）Hole diameter of thread＝d−2×（thread working rate／100） （6）Allowed dimension range of screw thread ID. excerpts from JIS B 0211（allowed dimension range and tolerance of metric fine pitch thread）. ■：5H or grade 1 Note：■■■is the allowed dimension range, its classification is as follow. ■：6H or grade 2 0.244 2.01 2.04 2.06 2.09 2.110.271 2.46 2.49 2.51 2.54 2.570.325 2.85 2.88 2.92 2.950.379 3.24 3.28 3.32 3.360.406 3.69 3.73 3.77 3.810.433 4.13 4.18 4.22 4.260.541 4.92 4.97 5.03 5.080.541 5.92 5.97 6.03 6.080.677 6.65 6.71 6.78 6.850.677 7.65 7.71 7.78 7.850.812 8.38 8.46 8.540.812 9.38 9.46 9.540.94710.110.312.11.08311.814.11.08313.815.61.35315.317.61.35317.31.35319.319.621.11.62420.824.11.62423.826.61.89426.229.61.89429.22.16531.732.135.12.16534.737.62.43637.140.62.43640.12.70642.643.1M2.5 2.5000.45M3 3.0000.5M3.5 3.5000.6M4 4.0000.7M4.5 4.5000.75 5.0000.8M5 6.0001M6M7 7.0001 8.0001.25M8 9.0001.25M910.0001.5M1011.0001.5M11M1212.0001.7514.0002M1416.0002M1618.0002.5M1820.0002.5M20M2222.0002.524.0003M2427.0003M2730.0003.5M3033.0003.5M33M3636.000439.0004M3942.0004.5M4245.0004.5M45M4848.0005 （1）H1＝0.541266P M2.5M3M3.5M4M4.5M5M5.5M6M72.5003.0003.5004.0004.5005.0005.5006.0007.0000.350.350.350.50.50.50.50.750.7510.7510.750.1890.1890.1890.2710.2710.2710.2710.4060.4060.5410.4060.5410.406M88.000M99.00010.211.913.915.417.419.420.923.926.429.431.934.937.440.442.92.122.623.123.463.964.464.965.196.196.927.197.928.192.142.643.143.493.994.494.995.236.236.977.237.978.232.162.663.163.514.014.515.015.276.277.037.278.038.272.182.683.183.544.044.545.045.316.317.087.318.088.31 ■：7H or grade 3 ■：7H or grade 310.612.414.416.018.020.021.624.627.230.232.835.838.341.343.910.512.314.315.817.819.821.424.427.030.032.535.538.141.143.710.712.514.516.118.120.121.724.727.330.333.036.038.641.644.210.812.614.616.218.220.221.924.927.530.533.236.238.841.844.52.202.703.203.574.074.575.075.356.357.137.358.138.352.222.723.223.594.094.595.095.396.397.197.398.198.392.242.743.243.624.124.625.125.436.437.247.438.248.432.252.753.253.654.154.655.155.476.477.307.478.308.47 10.912.714.716.418.420.422.125.127.730.733.436.439.142.144.82.272.773.273.684.184.685.185.516.517.357.518.358.512.1212.2012.221−2.6212.7012.721−3.1213.2013.221−3.4593.5713.5993.6393.9594.0714.0994.1394.4594.5714.5994.6394.9595.0715.0995.1395.1885.3385.3785.4246.1886.3386.3786.4246.9177.1077.1537.2177.1887.3387.3787.4247.9178.1078.1538.2178.1888.3388.3788.4241134Nominal diameter of threadNominal diameter of threadMetric coarse threadMetric fine pitch threadThreadOD.dPitchPHeight of engagementH1（1）ThreadOD.dPitchPHeight of engagementH1（4）Series80757065Series80757065grade 3Hole diameter of thread（2）100959085Hole diameter of thread（5）100959085Reference of screw thread ID.（3）Max. dimension5H7HororMin. dimension6Hor60grade 1grade 2grade 3 2.13 2.16 2.18 2.21 2.013 2.113 2.138 − 2.59 2.62 2.65 2.68 2.459 2.571 2.599 2.639 3.05 3.08 3.11 2.850 2.975 3.010 3.050 2.98 3.01 3.39 3.43 3.47 3.51 3.55 3.242 3.382 3.422 3.466 3.85 3.89 3.93 3.97 4.01 3.688 3.838 3.878 3.924 4.31 4.35 4.39 4.44 4.48 4.134 4.294 4.334 4.384 5.13 5.19 5.24 5.30 5.35 4.917 5.107 5.153 5.217 6.13 6.19 6.24 6.30 6.35 5.917 6.107 6.153 6.217 6.92 6.99 7.05 7.12 7.19 6.647 6.859 6.912 6.982 7.92 7.99 8.05 8.12 8.19 7.647 7.859 7.912 7.982 8.62 8.70 8.78 8.86 8.94 9.03 8.376 8.612 8.676 8.751 9.62 9.70 9.78 9.86 9.9410.03 9.376 9.612 9.676 9.75110.410.10610.37110.44110.53111.83512.13512.21012.31012.213.83514.13514.21014.31014.215.29415.64915.74415.85415.717.29417.64917.74417.85417.719.719.29419.64919.74419.85420.75221.15221.25221.38221.224.223.75224.15224.25224.38226.21126.66126.77126.92126.829.21129.66129.77129.92129.832.331.67032.14532.27032.42034.67035.14535.27035.42035.337.12937.65937.79937.97937.940.12940.65940.79940.97940.943.442.58743.14743.29743.487Reference of screw thread ID.（6）Max. dimension5H7HororMin. dimension6Hor60grade 1grade 2Table of Hole Size before Threading
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