最全的公制英制螺纹对照表.pdf

螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 公制細牙螺紋公制細牙螺紋公制細牙螺紋公制細牙螺紋jis b 0211-1982(單位單位單位單位：mm) 螺紋尺寸鑽頭直徑 崁合度區分：中 (注1)2級(注2) 下孔徑 崁合度區分：中 (註1)2級(註2) 內螺紋小徑 最小直徑最大直徑 m 2.5 0.352.22.22 (75%)2.1212.221 3 0.352.72.72 (75%)2.6212.721 3.5 0.353.23.22 (75%)3.1213.221 4 0.53.53.59 (75%)3.4593.599 4.5 0.544.09 (75%)3.9594.099 5 0.54.54.59 (75%)4.4594.599 5.5 0.555.09 (75%)4.9595.099 6 0.755.35.35 (80%)5.1885.378 7 0.756.36.35 (80%)6.1886.378 8 177.13 (80%)6.9177.153 8 0.757.37.35 (80%)7.1887.378 9 188.13 (80%)7.9178.153 9 0.758.38.35 (80%)8.1888.378 10 1.258.88.85 (85%)8.6478.912 10 199.13 (80%)8.9179.153 10 0.759.39.35 (80%)9.1889.378 11 11010.13 (80%)9.91710.153 11 0.7510.310.35 (80%)10.18810.378 12 1.510.510.62 (85%)10.37610.676 12 1.2510.810.85 (85%)10.64710.912 12 11111.13 (80%)10.91711.153 14 1.512.512.62 (85%)12.37612.676 14 11313.13 (80%)12.91713.153 15 1.513.513.62 (85%)13.37613.676 15 11414.13 (80%)13.91714.153 16 1.514.514.62 (85%)14.37614.676 16 11515.13 (80%)14.91715.153 17 1.515.515.62 (85%)15.37615.676 17 11616.13 (80%)15.91716.153 18 21616.2(85%)15.83516.210 18 1.516.516.62 (85%)16.37616.676 18 11717.13 (80%)16.91717.153 20 21818.2(85%)17.83518.210 20 1.518.518.62 (85%)18.37618.676 20 11919.13 (80%)18.91719.153 22 22020.2(85%)19.83520.210 22 1.520.520.62 (85%)20.37620.676 22 12121.13 (80%)20.91721.153 24 22222.2(85%)21.83522.210 24 1.522.522.62 (85%)22.37622.676 24 12323.13 (80%)22.91723.153 25 22323.2(85%)22.83523.210 25 1.523.523.62 (85%)23.37623.676 25 12424.13 (80%)23.91724.153 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 公制細牙螺紋公制細牙螺紋公制細牙螺紋公制細牙螺紋jis b 0211-1982(單位單位單位單位：mm) 螺紋尺寸鑽頭直徑 崁合度區分：中 (注1)2級(注2) 下孔徑 崁合度區分：中 (註1)2級(註2) 內螺紋小徑 最小直徑最大直徑 m 26 1.524.524.62 (85%)24.37624.676 27 22525.2(85%)24.83525.210 27 1.525.525.62 (85%)25.37625.676 27 12626.13 (80%)25.91726.153 28 22626.2(85%)25.83526.210 28 1.526.526.62 (85%)26.37626.676 28 12727.13 (80%)26.91727.153 30 32727.2(85%)26.75227.252 30 22828.2(85%)27.83528.210 30 1.528.528.62 (85%)28.37628.676 30 12929.13 (80%)28.91729.153 32 23030.2(85%)29.83530.210 32 1.530.530.62 (85%)30.37630.676 33 33030.2(85%)29.75230.252 33 23131.2(85%)30.83531.210 33 1.531.531.62 (85%)31.37631.676 35 1.533.533.62 (85%)33.37633.676 36 33333.2(85%)32.75233.252 36 23434.2(85%)33.83534.210 36 1.534.534.62 (85%)34.37634.676 38 1.536.536.62 (85%)36.37636.676 39 33636.2(85%)35.75236.252 39 23737.2(85%)36.83537.210 39 1.537.537.62 (85%)37.37637.676 40 33737.2(85%)36.75237.252 40 23838.2(85%)37.83538.210 40 1.538.538.62 (85%)38.37638.676 42 43838.1(90%)37.67038.270 42 33939.2(85%)38.75239.252 42 24040.2(85%)39.83540.210 42 1.540.540.62 (85%)40.37640.676 45 44141.1(90%)40.67041.270 45 34242.2(85%)41.75242.252 45 24343.2(85%)42.83543.210 45 1.543.543.62 (85%)43.37643.676 48 44444.1(90%)43.67044.270 48 34545.2(85%)44.75245.252 48 246 46.2(85%) 45.83546.210 48 1.546.546.62 (85%)46.37646.676 50 34747.2(85%)46.75247.252 50 24848.2(85%)47.83548.210 50 1.548.548.62 (85%)48.37648.676 註(1)等級：6h (2)基於 jis b 0211-1982標準 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 美制粗牙螺紋美制粗牙螺紋美制粗牙螺紋美制粗牙螺紋(單位單位單位單位：mm) 螺紋尺寸鑽頭直徑 2b 級 螺 紋 下 孔 徑 內 螺 紋 小 徑 最小直徑最大直徑 no.1 -64unc1.551.57 (65%)1.4251.582 2 -561.81.86 (65%)1.6951.871 3 -482.12.14 (65%)1.9412.146 4 -402.32.36 (70%)2.1572.385 5 -402.62.69 (70%)2.4872.697 6 -322.82.86 (75%)2.6422.895 8 -323.43.52 (75%)3.3023.530 10 -243.93.91 (80%)3.6833.962 12 -244.54.57 (80%)4.3444.597 1/4-205.15.25 (80%)4.9795.257 5/16-186.66.72 (80%)6.4016.731 3/8-1688.15 (80%)7.7988.153 7/16-149.49.50 (80%)9.1449.550 1/2-1310.811.0(80%)10.59211.023 9/16-1212.212.3(85%)11.98912.446 5/8-1113.613.8(85%)13.38613.868 3/4-1016.516.8(80%)16.30716.840 7/8- 919.519.6(85%)19.17719.761 1- 822.222.5(85%)21.97122.606 11/8- 72525.2(85%)24.63825.349 11/4- 728.228.4(85%)27.81328.524 13/8- 630.831.0(85%)30.35331.115 11/2- 63434.2(85%)33.52834.290 13/4- 539.539.8(85%)38.96439.827 2- 445.245.3(90%)44.67945.593 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 美制細牙螺紋美制細牙螺紋美制細牙螺紋美制細牙螺紋(單位單位單位單位：mm) 螺紋尺寸鑽頭直徑 2b 級 螺 紋 下 孔 徑 內 螺 紋 小 徑 最小直徑最大直徑 no. 0 -80unf1.251.30 (65%)1.1821.305 1 -721.551.61 (65%)1.4741.612 2 -641.851.90 (65%)1.7561.912 3 -562.12.17 (70%)2.0252.197 4 -482.42.44 (70%)2.2712.458 5 -442.72.74 (70%)2.5512.740 6 -402.93.02 (70%)2.8203.022 8 -363.53.59 (75%)3.4043.606 10 -324.14.14 (80%)3.9634.165 12 -284.64.70 (80%)4.4964.724 1/4-285.55.56 (80%)5.3605.588 5/16-246.97.02 (80%)6.7827.035 3/8-248.58.61 (80%)8.3828.636 7/16-209.910.01 (80%)9.72910.033 1/2-2011.511.60 (80%)11.32911.607 9/16-1812.913.07 (80%)12.75113.081 5/8-1814.514.65 (80%)14.35114.681 3/4-1617.517.59 (85%)17.32317.678 7/8-1420.520.6(85%)20.27020.675 1-1223.223.5(85%)23.11423.571 11/8-1226.526.7(80%)26.28926.746 11/4-1229.529.9(80%)29.46429.921 13/8-1232.833.0(85%)32.63933.096 11/2-123636.2(85%)35.81436.271 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 縫紉機螺紋縫紉機螺紋縫紉機螺紋縫紉機螺紋(sm)(單位單位單位單位：mm) 螺紋尺寸鑽頭直徑 2b 級 螺 紋 下 孔 徑 2級 內 螺 紋 小 徑 最小直徑最大直徑 sm1/16 - 801.251.28 (75%)1.2111.281 5/64 - 641.551.57 (80%)1.5131.593 3/32 -1002.102.15 (70%)2.0812.156 3/32 - 561.851.91 (80%)1.8411.936 1/8- 442.502.58 (80%)2.4852.605 1/8- 402.452.52 (80%)2.4212.551 9/64- 402.852.91 (80%)2.8182.948 11/64- 403.653.71 (80%)3.6123.742 3/16 - 323.903.94 (80%)3.8203.980 3/16 - 283.703.82 (80%)3.6843.844 7/32 - 324.704.73 (80%)4.6144.774 15/64 - 284.905.01 (80%)4.8755.055 1/4- 405.605.69 (80%)5.5965.726 1/4- 285.305.41 (80%)5.2725.452 縫紉機螺紋縫紉機螺紋縫紉機螺紋縫紉機螺紋(sm)(單位單位單位單位：mm) 螺紋尺寸鑽頭直徑 2b 級 螺 紋 下 孔 徑 2級 內 螺 紋 小 徑 最小直徑最大直徑 sm 1/4- 245.105.25 (80%)5.0865.266 9/32 - 286.106.20 (80%)6.0666.256 9/32 - 205.705.82 (80%)5.6345.824 5/16 - 286.906.00 (80%)6.8607.050 5/16 - 246.706.84 (80%)6.6746.864 5/16 - 186.306.38 (85%)6.2546.444 3/8- 288.508.58 (80%)8.4478.637 3/8- 187.907.97 (85%)7.8438.053 7/16 - 2810.1010.17 (80%)10.03410.224 7/16 - 169.309.36 (85%)9.2209.440 1/2- 2811.7011.76 (80%)11.62211.812 1/2- 2011.3011.38 (80%)11.19011.410 1/2- 1210.3010.36 (85%)10.18010.420 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 英制粗牙螺紋英制粗牙螺紋英制粗牙螺紋英制粗牙螺紋(單位單位單位單位：mm) 螺紋尺寸 下 孔 徑嵌 合 率 a 列(硬材質) b 列(軟材質)a 列直徑b 列直徑內螺紋最小徑 內螺紋最大徑 w1/82.62.570.783.070.088.3 3/163.73.678.485.870.088.3 1/45.15.076.983.070.588.3 5/166.66.574.099.570.188.4 3/88.07.975.080.069.588.2 7/169.49.373.780.069.088.8 1/210.710.573.881.269.088.2 9/1612.312.073.484.469.088.2 5/813.713.573.580.369.688.5 3/416.716.572.378.469.688.3 7/819.519.375.480.970.188.4 122.422.073.883.671.088.2 11/825.024.876.981.372.088.4 11/428.328.074.380.772.088.4 13/830.530.381.685.373.888.6 11/233.833.579.384.873.888.6 15/836.035.781.185.774.888.3 13/439.239.080.783.874.888.3 17/841.841.580.684.774.788.4 245.044.780.284.474.788.4 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 英制管用螺紋英制管用螺紋英制管用螺紋英制管用螺紋(單位單位單位單位：mm) 管用螺紋尺寸 jis b 0203jis b 2301 錐管內螺紋 rc(pt)平行內螺紋 rp(ps)錐管內螺紋 計 算 值下 孔 徑計 算 值下 孔 徑計 算 值下 孔 徑 1/166.2306.26.4906.5 1/88.2358.28.4958.58.1918.2 1/410.94110.911.34111.410.94510.9 3/814.42814.414.84614.914.38814.4 1/217.9501818.48918.517.94318 3/423.3492323.9752423.30523 129.4232930.1113029.35329 11/437.9403838.7723937.89038 11/243.8334444.5654543.72043 255.4125556.4765655.40655 21/270.7017172.0097270.78870 383.2018384.7098583.36483 31/295.5479697.1559795.74795 4107.834108109.855110108.322108 5133.110133135.255135133.597133 6158.510159160.655161158.810158 7183.360183185.954186 8208.560209211.354212 9233.960234236.754237 10259.166259262.154262 12309.747310312.875313 1982年由於 iso 進入，jis 管用螺紋規格得到修訂，螺紋代號有了變更， 因此絲攻的名稱還是延用了舊代號。 jis b 0202-1982 jis b 0203-1982 總總總總類類類類舊舊舊舊 記記記記 號號號號新新新新 記記記記 號號號號 耐密用斜行母螺紋耐密用斜行母螺紋耐密用斜行母螺紋耐密用斜行母螺紋ptrc 耐密用平行母螺紋耐密用平行母螺紋耐密用平行母螺紋耐密用平行母螺紋psrp 機械連結用平行母螺紋機械連結用平行母螺紋機械連結用平行母螺紋機械連結用平行母螺紋pfg 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 英制平行管用螺紋英制平行管用螺紋英制平行管用螺紋英制平行管用螺紋 pf(g)(單位單位單位單位：mm) 螺紋下孔徑 內螺紋小徑(參 考) 尺 寸大 徑 標準嵌 合 高度 h 系 列 1009590858075706560最小直徑 最大直徑 g1/167.723 0.58086.566.626.686.746.796.856.916.977.036.8436.561 g(pf)1/ 8 9.728 8.578.628.688.748.808.868.928.979.038.8488.566 1/413.157 0.856011.53 11.62 11.70 11.79 11.87 11.96 12.04 12.1311.89011.445 3/816.662 14.95 15.04 15.12 15.21 15.29 15.38 15.46 15.55 15.6415.39514.950 1/220.955 1.161818.818.919.019.119.219.319.419.619.17218.631 5/822.911 20.620.720.820.921.021.221.321.421.521.13020.589 3/426.441 24.224.424.524.624.724.824.925.024.65824.117 7/830.201 27.928.028.128.228.338.528.628.728.828.41827.877 133.249 14.786 30.330.430.630.730.931.031.231.331.530.93130.291 11/837.897 35.135.235.435.535.735.835.936.535.57934.939 11/441.910 39.039.139.239.439.639.739.840.040.139.59238.952 13/844.323 41.441.541.741.842.042.142.242.442.642.00541.365 11/247.803 45.045.145.345.445.645.745.946.045.48549.023 15/851.910 49.249.349.549.649.849.950.050.249.67250.788 13/453.746 50.850.951.151.251.451.551.752.052.051.42856.656 259.614 56.857.057.157.257.457.557.857.857.296 使用粗線左側數據作為攻絲前的底孔直徑，可加工符合jis b 0202的 a 級或 b 級的內螺紋小徑。 美制斜行管用螺紋美制斜行管用螺紋美制斜行管用螺紋美制斜行管用螺紋 (nptnps)(單位單位單位單位：mm) 管用螺紋尺寸 斜行螺紋(npt)平行螺紋(nps) 鑽頭直徑鑽頭直徑 使用鉸刀場合不使用鉸刀場合 1/160.234 ( 5.94)0.246 ( 6.15)1/40.250 ( 6.35) 1/821/640.328 ( 8.33)0.332 ( 8.43)11/320.344 ( 8.74) 1/427/640.422 (10.72)7/160.438 (11.13)7/160.438 (11.13) 3/89/160.562 (14.27)9/160.562 (14.27)37/640.578 (14.68) 1/211/160.688 (17.48)45/640.703 (17.86)23/320.719 (18.26) 3/457/640.891 (22.63)29/320.906 (23.01)59/640.922 (23.42) 111/81.125 (28.58)19/641.141 (28.98)15/321.156 (29.36) 11/4115/321.469 (37.31)131/641.484 (37.69)11/21.500 (38.10) 11/211/161.703 (43.26)123/321.719 (43.66)13/41.750 (44.45) 2211/642.172 (55.17)23/162.188 (55.58)27/322.219 (56.36) 21/2239/642.578 (65.48)239/642.609 (66.27)221/322.656 (67.46) 上述鑽頭直徑來源於美制管用螺紋ansiasme b1.20.11983 pipe threads, general purpose (inch)標準 。 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表 美制管用耐密斜行螺紋美制管用耐密斜行螺紋美制管用耐密斜行螺紋美制管用耐密斜行螺紋(nptfnpsf)(單位單位單位單位： mm) 管用螺紋尺寸 斜行螺紋(nptf)平行螺紋(npsf) 鑽頭直徑鑽頭直徑 使用鉸刀場合不使用鉸刀場合 1/160.234 ( 5.94)0.246 ( 6.25)1/40.250 ( 6.35) 1/821/640.328 ( 8.33) 0.339 ( 8.61)11/320.344 ( 8.74) 1/427/640.422 (10.72) 7/160.438 (11.13) 0.444 (11.28) 3/89/160.562 (14.27) 37/640.578 (14.68) 37/640.578 (14.68) 1/211/160.688 (17.48) 45/640.703 (17.86) 23/320.719 (18.26) 3/457/640.891 (22.63) 59/640.922 (23.42) 0.922 (23.42) 111/81.125 (28.58) 15/321.156 (29.36) 15/321.156 (29.36) 11/4115/321.469 (37.31) 11/21.500 (38.10) 11/2145/641.703 (43.26) 147/641.734 (44.04) 223/162.188 (55.58) 27/322.219 (56.36) 21/2219/322.594 (65.89) 241/642.641 (67.08) 上述鑽頭直徑來源於美制管用耐密斜行螺紋 ansi b1.20.31957 dryseal pipe threads (inch)標準 。 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表(無屑絲攻用無屑絲攻用無屑絲攻用無屑絲攻用) 公制螺紋公制螺紋公制螺紋公制螺紋(nrt)(單位單位單位單位：mm) 螺紋尺寸 1級螺紋用下孔徑2級螺紋用下孔徑 rh 精度 最小最大 (嵌合率) rh 精度 最小最大 (嵌合率) m 1 0.2520.87 0.89 (10085)40.90 0.92 (10080) 1.10.2520.97 0.99 (10085)41.00 1.02 (10080) 1.20.2521.07 1.09 (10085)41.10 1.12 (10080) 1.40.321.244 1.263(10085)41.270 1.294 (10080) 1.70.3521.51 1.54 (10080)41.54 1.58 (10075) 20.421.78 1.82 (10080)41.81 1.85 (10075) 2.30.422.08 2.12 (10080)42.11 2.15 (10075) 2.50.4522.25 2.29 (10080)42.28 2.33 (10075) 2.60.4522.35 2.39 (10080)42.38 2.43 (10075) 30.532.74 2.78 (10080)52.76 2.81 (10075) 3.50.633.18 3.21 (10085)53.20 3.26 (10075) 40.743.63 3.67 (10085)63.65 3.70 (10085) 50.844.57 4.62 (10085)64.59 4.66 (10080) 6145.45 5.51 (10085)75.48 5.57 (10080) 7146.45 6.51 (10085)76.48 6.57 (10080) 81.2557.31 7.38 (10085)77.34 7.41 (10085) 8147.45 7.51 (10085)77.48 7.57 (10080) 101.559.16 9.22 (10090)79.18 9.28 (10085) 101.2559.31 9.38 (10085)79.34 9.41 (10085) 10159.46 9.52 (10085)79.48 9.57 (10080) 121.75511.01 11.08 (10090)8 11.05 11.15 (10085) 121.5511.16 11.22 (10090)7 11.18 11.28 (10085) 121.25511.31 11.38 (10085)7 11.34 11.41 (10085) 121511.46 11.52 (10085)7 11.48 11.57 (10080) 142612.83 12.95 (10090)1012.92 13.04 (10085) 141.5513.16 13.22 (10090)913.21 13.30 (10085) 162614.87 14.95 (10090)1014.92 15.04 (10085) 161.5515.16 15.22 (10090)915.21 15.30 (10080) 182.5616.57 16.67 (10090)1116.63 16.78 (10085) 181.5617.17 17.23 (10090)1017.22 17.31 (10085) 202.5618.57 18.67 (10090)1118.63 18.78 (10085) 201.5619.17 19.23 (10090)1019.22 19.31 (10085) 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表( ( ( (無屑絲攻用無屑絲攻用無屑絲攻用無屑絲攻用) ) ) ) 美制粗牙螺紋美制粗牙螺紋美制粗牙螺紋美制粗牙螺紋(nrt)(單位單位單位單位：mm) 螺紋尺寸 2b 級螺紋用下孔徑3b 級螺紋用下孔徑 rh 精 度 最小最大 (嵌合率) rh 精 度 最小最大 (嵌合率) no. 2-56unc41.96 2.02 (10065)31.95 2.01 (10065) 3-4842.25 2.32 (10065)32.23 2.31 (10065) 4-4052.52 2.60 (10070)32.50 2.58 (10070) 5-4052.86 2.93 (10070)32.83 2.91 (10070) 6-3253.09 3.17 (10075)33.06 3.14 (10075) 8-3263.75 3.83 (10075)43.74 3.82 (10075) 10-2464.26 4.35 (10080)44.24 4.32 (10080) 12-2464.92 5.01 (10080)44.90 4.96 (10085) 1/4 -2065.66 5.76 (10080)45.64 5.74 (10080) 5/16 -1877.18 7.29 (10080)57.15 7.24 (10085) 3/8 -1678.66 8.78 (10080)58.63 8.73 (10085) 7/16 -14710.11 10.25 (10080)510.08 10.19 (10085) 1/2 -13810.62 11.78 (10080)611.60 11.68 (10090) 9/16 -121013.14 13.27 (10085)813.11 13.24 (10085) 5/8 -111114.62 14.76 (10085)814.58 14.67 (10090) 3/4 -101217.67 17.88 (10080)917.63 17.74 (10090) 7/8 - 91220.68 20.85 (10085)920.64 20.75 (10090) 1- 81323.65 23.84 (10085)1023.61 23.74 (10090) 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表( ( ( (無屑絲攻用無屑絲攻用無屑絲攻用無屑絲攻用) ) ) ) 美制細牙螺紋美制細牙螺紋美制細牙螺紋美制細牙螺紋(nrt)(單位單位單位單位：mm) 螺紋尺寸 2b 級螺紋用下孔徑3b 級螺紋用下孔徑 rh 精 度 最小最大 (嵌合率) rh 精 度 最小最大 (嵌合率) no. 2-64unf31.98 2.04 (10065)21.97 2.03 (10065) 3-5642.29 2.35 (10065)32.28 2.34 (10065) 4-4842.57 2.64 (10070)32.56 2.63 (10070) 5-4442.88 2.95 (10070)32.87 2.94 (10070) 6-4053.19 3.26 (10070)33.16 3.22 (10075) 8-3653.80 3.88 (10075)43.79 3.86 (10075) 10-3254.41 4.48 (10080)44.40 4.46 (10080) 12-2855.00 5.08 (10080)44.99 5.06 (10080) 1/4-2855.86 5.93 (10080)45.85 5.92 (10080) 5/16-2467.38 7.46 (10080)57.36 7.43 (10085) 3/8 -2468.96 9.05 (10080)58.95 9.02 (10085) 7/16-20710.44 10.54 (10080)510.41 10.49 (10085) 1/2 -20712.02 12.12 (10080)512.00 12.05 (10090) 9/16-18913.55 13.66 (10080)713.53 13.58 (10090) 5/8 -18915.14 15.25 (10080)715.11 15.17 (10090) 3/4 -161018.22 18.32 (10085)718.18 18.25 (10090) 7/8 -141121.27 21.38 (10085)821.23 21.27 (10095) 1- 121224.28 24.41 (10085)924.24 24.32 (10090) 英制管用平行螺紋英制管用平行螺紋英制管用平行螺紋英制管用平行螺紋(nrt)(單位單位單位單位：mm) 螺紋尺寸rh 精 度最小最大(嵌合率) pf 1/869.249.35 (10080) 1/4712.4112.62 (10075) 3/8715.9216.12 (10075) 1/2819.9320.15 (10080) 3/4825.4125.64 (10080) 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表( ( ( (無屑絲攻用無屑絲攻用無屑絲攻用無屑絲攻用) ) ) ) 公制螺紋公制螺紋公制螺紋公制螺紋(hrt)(單位單位單位單位：mm) 螺紋尺寸 1級螺紋用下孔徑2級螺紋用下孔徑 rh 精 度 最小最大 (嵌合率) rh 精 度 最小最大 (嵌合率) m 1 0.2520.8580.879 (10085)40.8580.887 (10080) 1.20.2521.0581.079 (10085)41.0581.087 (10080) 1.40.321.23 1.26 (10085)41.23 1.26 (10080) 1.60.3521.40 1.44 (10080)41.40 1.45 (10075) 1.70.351.50 1.54 (10080)41.50 1.55 (10075) 1.80.3521.60 1.64 (10080)41.60 1.65 (10075) 2 0.421.77 1.82 (10080)41.77 1.82 (10080) 2 0.2521.8581.887 (10080)1.8581.887 (10080) 2.30.42.07 2.12 (10080)42.07 2.13 (10075) 2.50.4532.24 2.30 (10080)52.24 2.31 (10075) 2.60.452.34 2.40 (10080)52.34 2.41 (10075) 3 0.632.72 2.73 (10090)52.66 2.73 (10090) 3 0.552.72 2.77 (10080)62.72 2.78 (10075) 3 0.3532.80 2.84 (10080)52.80 2.85 (10075) 3.50.633.16 3.21 (10085)53.16 3.25 (10075) 4 0.7533.57 3.64 (10085)63.57 3.64 (10085) 4 0.763.60 3.66 (10085)73.60 3.66 (10085) 4 0.533.71 3.77 (10080)63.71 3.79 (10075) 5 0.934.49 4.59 (10085)74.49 4.59 (10085) 5 0.834.55 4.62 (10085)84.55 4.64 (10080) 5 0.532.72 4.77 (10080)64.72 4.79 (10075) 6 145.43 5.52 (10085)75.43 5.55 (10080) 6 0.7535.57 5.64 (10085)75.57 5.66 (10080) 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表( ( ( (護套螺紋用護套螺紋用護套螺紋用護套螺紋用) ) ) ) 公制粗牙螺紋公制粗牙螺紋公制粗牙螺紋公制粗牙螺紋 hl-nrt(單位單位單位單位：mm) 螺 紋 尺 寸rh 精 度最小最大(嵌合率) m30.533.393.43 (10080) 40.744.544.58 (10085) 50.845.615.66 (10085) 6146.756.81 (10085) 81.2558.939.01 (10085) 101.5511.1111.17 (10090) 101.25510.9311.01 (10085) 121.75513.2813.17 (10090) 121.5513.1113.17 (10090) 121.25512.9313.01 (10085) 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表( ( ( (護套螺紋用護套螺紋用護套螺紋用護套螺紋用) ) ) ) 公制粗牙螺紋公制粗牙螺紋公制粗牙螺紋公制粗牙螺紋(單位單位單位單位：mm) 螺 紋 尺 寸 下 孔 徑 鑽 頭直 徑 最小直徑最大直徑 m 2.5 0.452.602.652.6 2.6 0.452.702.752.7 3 0.53.123.203.1 4 0.74.174.304.2 5 0.85.165.335.2 6 16.256.426.3 8 1.258.318.528.4 10 1.510.3710.6210.5 12 1.7512.4312.7312.5 14 214.4914.8314.5 16 216.4916.8316.5 18 2.518.5819.0419.0 20 2.520.5821.0421.0 22 2.522.5823.0423.0 24 2.524.7025.2525.0 公制細牙螺紋公制細牙螺紋公制細牙螺紋公制細牙螺紋(單位單位單位單位：mm) 螺 紋 尺 寸 下 孔 徑鑽 頭直 徑 最小直徑最大直徑 m 10 110.2510.4210.3 10 1.2510.3110.5210.4 12 1.2512.3112.5212.5 12 1.512.3712.6212.5 14 1.514.3714.6214.5 16 1.516.3716.6216.5 18 1.518.3718.6218.5 20 1.520.3720.6220.5 20 220.4720.8320.5 22 1.522.3722.6222.5 24 1.524.3724.6224.5 24 224.4724.8324.5 30 1.530.3730.6230.5 螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表螺紋下孔徑表( ( ( (護套螺紋用護套螺紋用護套螺紋用護套螺紋用) ) ) ) 美制粗牙螺紋美制粗牙螺紋美制粗牙螺紋美制粗牙螺紋(單位單位單位單位：mm) 螺 紋 尺 寸 下 孔 徑鑽 頭直 徑 最小直徑最大直徑 no. 2 56unc2.292.392.3 3 482.642.742.7 4 402.953.073.0 5 403.253.383.3 6 323.663.813.7 8 324.324.474.4 10 245.055.215.1 12 245.615.775.7 1/4 206.636.786.7 5/16 88.338.488.4 3/8 169.9110.1110.0 7/16 1411.5111.7611.5 1/2 1313.0813.3413.1 9/16 1214.6814.9414.7 美制細牙螺紋美制細牙螺紋美制細牙螺紋美制細牙螺紋(單位單位單位單位：mm) 螺 紋 尺 寸 下 孔 徑 鑽 頭直 徑 最小直徑最大直徑 no. 4 48unf2.973.053.0 6 403.663.783.7 8 364.324.444.4 10 324.985.135.0 1/4 286.536.716.6 5/16 248.208.388.2 3/8 249.789.969.8 7/16 2011.4311.6311.5 1/2 2013.0313.2613.1 9/16 1814.6614.8814.7 5/8 1816.2616.4816.3 3/4 1619.4319.6819.5 7/8 1422.6122.8622.7 1 1225.7626.0426.0 各種換算表各種換算表各種換算表各種換算表 山數節距換算表山數節距換算表山數節距換算表