8/H8/5（4/H）H）H3（2dd1d1D2DPD8/HーExcerpt from JIS B 0205（2001）ー30ﾟ30ﾟ90ﾟ （1）Priority should be given to Column1. If required, select items in Column 2 and 3, in that order. Basic thread is shown in bold line.P/8Female threadEffective D60ﾟMale threadP/2P/4Axial line of threadCalculation formula for basic dimensionH＝0.866025404P 5/8H＝0.541265877Pd2＝d−0.649519Pd1＝d−1.082532PD＝dD2＝d2D1＝d1Unit：mm1136M 1.1M 1.2M 1.4M 1.6M 1.8M 2M 2.2M 2.5M 3M 3.5M 4M 4.5M 5M 6M 7M 8M 10M 12M 14M 16M 18M 20M 22M 24M 27M 30M 33M 36M 39M 42M 45M 48M 52M 56M 60M 64M 68PitchP0.250.250.250.30.350.350.40.450.450.50.60.70.750.8111.251.251.51.51.75222.52.52.5333.53.5444.54.5555.55.566M 9M 11Thread performance Diameterd DEffective D2Male threadEffective d2Diameterd D1height5/8H0.1350.1350.1350.1620.1890.1890.2170.2440.2440.2710.3250.3790.4060.4330.5410.5410.6770.6770.8120.8120.9471.0831.0831.3531.3531.3531.6241.6241.8941.8942.1652.1652.4362.4362.7062.7062.9772.9773.2483.248OD. d1.0001.1001.2001.4001.6001.8002.0002.2002.5003.0003.5004.0004.5005.0006.0007.0008.0009.00010.00011.00012.00014.00016.00018.00020.00022.00024.00027.00030.00033.00036.00039.00042.00045.00048.00052.00056.00060.00064.00068.000Female ThreadID. D10.8380.9381.0381.2051.3731.5731.7401.9082.2082.6753.1103.5454.0134.4805.3506.3507.1888.1889.02610.02610.86312.70114.70116.37618.37620.37622.05125.05127.72730.72733.40236.40239.07742.07744.75248.75252.42856.42860.10364.1030.7290.8290.9291.0751.2211.4211.5671.7132.0132.4592.8503.2423.6884.1344.9175.9176.6477.6478.3769.37610.10611.83513.83515.29417.29419.29420.75223.75226.21129.21131.67034.67037.12940.12942.58746.58750.04654.04657.50561.505Nominal diameter（1）Column 1Column 2Column 3M 1Metric Coarse Threads
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