各种螺纹详细参数和钻孔直径对照表

1、螺纹下孔径表 公制粗牙螺纹 jis b 0209-1982(單位：mm)螺纹尺寸钻头直径崁合度區分：中(注1)2級(注2)下孔径崁合度區分：中(註1)2級(註2)內螺纹小径最小直径最大直径m 1 0.250.750.78 (80%)0.7290.7851.1 0.250.850.88 (80%)0.8290.8851.2 0.250.950.98 (80%)0.9290.9851.4 0.31.11.14 (80%)1.0751.1421.6 0.351.251.32 (75%)1.2211.3211.8 0.351.451.52 (75%)1.4211.5212 0.41.61.65 (80

2、%)1.5671.6792.2 0.451.751.83 (75%)1.7131.8382.5 0.452.12.13 (75%)2.0132.1383 0.52.52.59 (75%)2.4592.5993.5 0.62.93.01 (75%)2.8503.0104 0.73.33.39 (80%)3.2423.4224.5 0.753.83.85 (80%)3.6883.8785 0.84.24.31 (80%)4.1344.3346 155.13 (80%)4.9175.1537 166.13 (80%)5.9176.1538 1.256.86.85 (85%)6.6476.9129 1

3、.257.87.85 (85%)7.6477.91210 1.58.58.62 (85%)8.3768.67611 1.59.59.62 (85%)9.3769.67612 1.7510.310.40 (85%)10.10610.44114 21212.2 (85%)11.83512.21016 21414.2 (85%)13.83514.21018 2.515.515.7 (85%)15.29415.74420 2.517.517.7 (85%)17.29417.74422 2.519.519.2 (85%)19.29419.74424 32121.2 (85%)20.75221.25227

4、 32424.2 (85%)23.75224.25230 3.526.526.6 (90%)26.21126.77133 3.529.529.6 (90%)29.21129.77136 43232.1 (90%)31.67032.27039 43535.1 (90%)34.67035.27042 4.537.537.6 (90%)37.12937.79945 4.540.540.6 (90%)40.12940.79948 54343.1 (90%)42.58743.297註(1)m1.4以下等級：5h、m1.6以上等級：6h(2)基於jis b 0209-1982標準螺纹下孔径表 公制細牙螺纹

5、 jis b 0211-1982(單位：mm)螺纹尺寸钻头直径崁合度區分：中(注1)2級(注2)下孔径崁合度區分：中(註1)2級(註2)內螺纹小径最小直径最大直径m 2.5 0.352.22.22 (75%)2.1212.2213 0.352.72.72 (75%)2.6212.7213.5 0.353.23.22 (75%)3.1213.2214 0.53.53.59 (75%)3.4593.5994.5 0.544.09 (75%)3.9594.0995 0.54.54.59 (75%)4.4594.5995.5 0.555.09 (75%)4.9595.0996 0.755.35.35

6、(80%)5.1885.3787 0.756.36.35 (80%)6.1886.3788 177.13 (80%)6.9177.1538 0.757.37.35 (80%)7.1887.3789 188.13 (80%)7.9178.1539 0.758.38.35 (80%)8.1888.37810 1.258.88.85 (85%)8.6478.91210 199.13 (80%)8.9179.15310 0.759.39.35 (80%)9.1889.37811 11010.13 (80%)9.91710.15311 0.7510.310.35 (80%)10.18810.37812

7、1.510.510.62 (85%)10.37610.67612 1.2510.810.85 (85%)10.64710.91212 11111.13 (80%)10.91711.15314 1.512.512.62 (85%)12.37612.67614 11313.13 (80%)12.91713.15315 1.513.513.62 (85%)13.37613.67615 11414.13 (80%)13.91714.15316 1.514.514.62 (85%)14.37614.67616 11515.13 (80%)14.91715.15317 1.515.515.62 (85%)

8、15.37615.67617 11616.13 (80%)15.91716.15318 21616.2 (85%)15.83516.21018 1.516.516.62 (85%)16.37616.67618 11717.13 (80%)16.91717.15320 21818.2 (85%)17.83518.21020 1.518.518.62 (85%)18.37618.67620 11919.13 (80%)18.91719.15322 22020.2 (85%)19.83520.21022 1.520.520.62 (85%)20.37620.67622 12121.13 (80%)2

9、0.91721.15324 22222.2 (85%)21.83522.21024 1.522.522.62 (85%)22.37622.67624 12323.13 (80%)22.91723.15325 22323.2 (85%)22.83523.21025 1.523.523.62 (85%)23.37623.67625 12424.13 (80%)23.91724.153螺纹下孔径表 公制細牙螺纹 jis b 0211-1982(單位：mm)螺纹尺寸钻头直径崁合度區分：中(注1)2級(注2)下孔径崁合度區分：中(註1)2級(註2)內螺纹小径最小直径最大直径m 26 1.524.524.

10、62 (85%)24.37624.67627 22525.2 (85%)24.83525.21027 1.525.525.62 (85%)25.37625.67627 12626.13 (80%)25.91726.15328 22626.2 (85%)25.83526.21028 1.526.526.62 (85%)26.37626.67628 12727.13 (80%)26.91727.15330 32727.2 (85%)26.75227.25230 22828.2 (85%)27.83528.21030 1.528.528.62 (85%)28.37628.67630 12929.13

11、 (80%)28.91729.15332 23030.2 (85%)29.83530.21032 1.530.530.62 (85%)30.37630.67633 33030.2 (85%)29.75230.25233 23131.2 (85%)30.83531.21033 1.531.531.62 (85%)31.37631.67635 1.533.533.62 (85%)33.37633.67636 33333.2 (85%)32.75233.25236 23434.2 (85%)33.83534.21036 1.534.534.62 (85%)34.37634.67638 1.536.5

12、36.62 (85%)36.37636.67639 33636.2 (85%)35.75236.25239 23737.2 (85%)36.83537.21039 1.537.537.62 (85%)37.37637.67640 33737.2 (85%)36.75237.25240 23838.2 (85%)37.83538.21040 1.538.538.62 (85%)38.37638.67642 43838.1 (90%)37.67038.27042 33939.2 (85%)38.75239.25242 24040.2 (85%)39.83540.21042 1.540.540.62

13、 (85%)40.37640.67645 44141.1 (90%)40.67041.27045 34242.2 (85%)41.75242.25245 24343.2 (85%)42.83543.21045 1.543.543.62 (85%)43.37643.67648 44444.1 (90%)43.67044.27048 34545.2 (85%)44.75245.25248 24646.2 (85%)45.83546.21048 1.546.546.62 (85%)46.37646.67650 34747.2 (85%)46.75247.25250 24848.2 (85%)47.8

14、3548.21050 1.548.548.62 (85%)48.37648.676註(1)等級：6h(2)基於jis b 0211-1982標準螺纹下孔径表 美制粗牙螺纹 (單位：mm)螺纹尺寸钻头直径2b級 螺 纹下 孔 径內 螺 纹 小 径最小直径最大直径no.1 -64unc1.551.57 (65%)1.4251.582 2 -561.81.86 (65%)1.6951.8713 -482.12.14 (65%)1.9412.1464 -402.32.36 (70%)2.1572.385 5 -402.62.69 (70%)2.4872.697 6 -322.82.86 (75%)2.

15、6422.895 8 -323.43.52 (75%)3.3023.530 10 -243.93.91 (80%)3.6833.962 12 -244.54.57 (80%)4.3444.5971/4 -205.15.25 (80%)4.9795.2575/16 -186.66.72 (80%)6.4016.731 3/8 -1688.15 (80%)7.7988.1537/16 -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 -1113.61

16、3.8 (85%)13.38613.868 3/4 -1016.516.8 (80%)16.30716.840 7/8 - 919.519.6 (85%)19.17719.7611 - 822.222.5 (85%)21.97122.606 1 1/8 - 72525.2 (85%)24.63825.349 1 1/4 - 728.228.4 (85%)27.81328.524 1 3/8 - 630.831.0 (85%)30.35331.115 1 1/2 - 63434.2 (85%)33.52834.290 1 3/4 - 539.539.8 (85%)38.96439.827 2 -

17、 4 45.245.3 (90%)44.67945.593螺纹下孔径表 美制細牙螺纹 (單位：mm)螺纹尺寸钻头直径2b級 螺 纹下 孔 径內 螺 纹 小 径最小直径最大直径no. 0 -80unf1.251.30 (65%)1.1821.305 1 -721.551.61 (65%)1.4741.6122 -641.851.90 (65%)1.7561.9123 -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

18、-363.53.59 (75%)3.4043.606 10 -324.14.14 (80%)3.9634.165 12 -284.64.70 (80%)4.4964.7241/4 -285.55.56 (80%)5.3605.5885/16 -246.97.02 (80%)6.7827.0353/8 -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

19、(80%)14.35114.681 3/4 -1617.517.59 (85%)17.32317.6787/8 -1420.520.6 (85%)20.27020.6751 -1223.223.5 (85%)23.11423.571 1 1/8 -1226.526.7 (80%)26.28926.746 1 1/4 -1229.529.9 (80%)29.46429.921 1 3/8 -1232.833.0 (85%)32.63933.096 1 1/2 -123636.2 (85%)35.81436.271螺纹下孔径表 英制粗牙螺纹 (單位：mm) 螺纹尺寸下 孔 径嵌 合 率a列(硬材質

20、)b列(軟材質)a列直径b列直径內螺纹最小径內螺纹最大径w 1/82.62.570.783.070.088.33/163.73.678.485.870.088.31/45.15.076.983.070.588.35/166.66.574.099.570.188.43/88.07.975.080.069.588.27/169.49.373.780.069.088.81/210.710.573.881.269.088.29/1612.312.073.484.469.088.25/813.713.573.580.369.688.53/416.716.572.378.469.688.37/819.51

21、9.375.480.970.188.4122.422.073.883.671.088.21 1/825.024.876.981.372.088.41 1/428.328.074.380.772.088.41 3/830.530.381.685.373.888.61 1/233.833.579.384.873.888.61 5/836.035.781.185.774.888.31 3/439.239.080.783.874.888.31 7/841.841.580.684.774.788.4245.044.780.284.474.788.4螺纹下孔径表英制管用螺纹 (單位：mm) 管用螺纹尺寸j

22、is b 0203jis b 2301錐管內螺纹rc(pt)平行內螺纹rp(ps)錐管內螺纹計 算 值下 孔 径計 算 值下 孔 径計 算 值下 孔 径 1/166.2306.26.4906.51/88.2358.28.4958.58.1918.21/410.94110.911.34111.410.94510.93/814.42814.414.84614.914.38814.41/217.9501818.48918.517.943183/423.3492323.9752423.30523129.4232930.1113029.353291 1/437.9403838.7723937.89038

23、1 1/243.8334444.5654543.72043255.4125556.4765655.406552 1/270.7017172.0097270.78870383.2018384.7098583.364833 1/295.5479697.1559795.747954107.834108109.855110108.3221085133.110133135.255135133.5971336158.510159160.655161158.8101587183.360183185.9541868208.560209211.3542129233.960234236.75423710259.1

24、66259262747310312.875313螺纹下孔径表 英制平行管用螺纹pf(g) (單位：mm) 螺 纹下 孔 径 內螺纹小径(參考)尺 寸大 径標準嵌合高度h系 列 1009590858075706560最小直径最大直径g 1/167.7230.58086.566.626.686.746.796.856.916.977.036.8436.561g(pf)1/89.7288.578.628.688.748.808.868.928.979.038.8488.5661/413.1570.856011.5311.6211.7011.7911.8711.9612.04

25、12.1311.89011.4453/816.66214.9515.0415.1215.2115.2915.3815.4615.5515.6415.39514.9501/220.9551.161818.818.919.019.119.219.319.419.619.17218.6315/822.91120.620.720.820.921.021.221.321.421.521.13020.5893/426.44124.224.424.524.624.724.824.925.024.65824.1177/830.20127.928.028.128.228.338.528.628.728.828.

26、41827.877133.24914.78630.330.430.630.730.931.031.231.331.530.93130.2911 1/837.89735.135.235.435.535.735.835.936.535.57934.9391 1/441.91039.039.139.239.439.639.739.840.040.139.59238.9521 3/844.32341.441.541.741.842.042.142.242.442.642.00541.3651 1/247.80345.045.145.345.445.645.745.946.045.48549.0231

27、5/851.91049.249.349.549.649.849.950.050.249.67250.7881 3/453.74650.850.951.151.251.451.551.752.052.051.42856.656259.61456.857.057.157.257.457.557.857.857.296使用粗線左側數據作為攻絲前的底孔直径，可加工符合jis b 0202的a級或b級的內螺纹小径。 美制斜行管用螺纹 (nptnps) (單位：mm) 管用螺纹尺寸斜行螺纹(npt)平行螺纹(nps)钻头直径 钻头直径 使用鉸刀場合不使用鉸刀場合1/160.234 ( 5.94)0.246

28、 ( 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)

29、11 1/81.125 (28.58)1 9/641.141 (28.98)1 5/321.156 (29.36)1 1/41 15/321.469 (37.31)1 31/641.484 (37.69)1 1/21.500 (38.10)1 1/21 1/161.703 (43.26)1 23/321.719 (43.66)1 3/41.750 (44.45)22 11/642.172 (55.17)2 3/162.188 (55.58)2 7/322.219 (56.36)2 1/22 39/642.578 (65.48)2 39/642.609 (66.27)2 21/322.656 (

30、67.46)上述钻头直径來源於美制管用螺纹ansiasme b1.20.11983 pipe threads, general purpose (inch)標準。螺纹下孔径表 美制管用耐密斜行螺纹(nptfnpsf) (單位：mm)管用螺纹尺寸斜行螺纹(nptf)平行螺纹(npsf) 钻头直径钻头直径 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 (11.1

31、3)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)11 1/81.125 (28.58)1 5/321.156 (29.36)1 5/321.156 (29.36)1 1/41 15/321.469 (37.31)1 1/21.500 (38.10)1 1/21 45/641.703 (

32、43.26)1 47/641.734 (44.04)22 3/162.188 (55.58)2 7/322.219 (56.36)2 1/22 19/322.594 (65.89)2 41/642.641 (67.08)上述钻头直径來源於美制管用耐密斜行螺纹ansi b1.20.31957 dryseal pipe threads (inch)標準。螺纹下孔径表(無屑絲攻用)公制螺纹(nrt) (單位：mm)螺纹尺寸1級螺纹用下孔径2級螺纹用下孔径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

33、.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)2 0.421.78 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)2.6

34、0.4522.35 2.39 (10080)42.38 2.43 (10075)3 0.532.74 2.78 (10080)52.76 2.81 (10075)3.50.633.18 3.21 (10085)53.20 3.26 (10075)4 0.743.63 3.67 (10085)63.65 3.70 (10085)5 0.844.57 4.62 (10085)64.59 4.66 (10080)6 145.45 5.51 (10085)75.48 5.57 (10080)7 146.45 6.51 (10085)76.48 6.57 (10080)8 1.2557.31 7.38

35、(10085)77.34 7.41 (10085)8 147.45 7.51 (10085)77.48 7.57 (10080)10 1.559.16 9.22 (10090)79.18 9.28 (10085)10 1.2559.31 9.38 (10085)79.34 9.41 (10085)10 159.46 9.52 (10085)79.48 9.57 (10080)12 1.75511.01 11.08 (10090)811.05 11.15 (10085)12 1.5511.16 11.22 (10090)711.18 11.28 (10085)12 1.25511.31 11.3

36、8 (10085)711.34 11.41 (10085)12 1511.46 11.52 (10085)711.48 11.57 (10080)14 2612.83 12.95 (10090)1012.92 13.04 (10085)14 1.5513.16 13.22 (10090)913.21 13.30 (10085)16 2614.87 14.95 (10090)1014.92 15.04 (10085)16 1.5515.16 15.22 (10090)915.21 15.30 (10080)18 2.5616.57 16.67 (10090)1116.63 16.78 (1008

37、5)18 1.5617.17 17.23 (10090)1017.22 17.31 (10085)20 2.5618.57 18.67 (10090)1118.63 18.78 (10085)20 1.5619.17 19.23 (10090)1019.22 19.31 (10085)螺纹下孔径表(無屑絲攻用)美制粗牙螺纹(nrt) (單位：mm)螺纹尺寸2b級螺纹用下孔径3b級螺纹用下孔径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

38、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)5/1

39、6 -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 (10

40、080)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) 螺纹下孔径表(無屑絲攻用)美制細牙螺纹(nrt) (單位：mm)螺纹尺寸2b級螺纹用下孔径3b級螺纹用下孔径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