螺纹底孔直径表上课讲义.xls

螺纹底孔直径表(切削）公制 粗牙螺纹 (切削方式加工）螺纹尺寸钻头直径嵌合度区分嵌合度区分中（注1）2级（注2）中（注1）内螺纹小径2级（注2）最小直径最大直径M10.250.750.78（80%）0.7290.785M1.10.250.850.88（80%）0.8290.885M1.20.250.950.98（80%）0.9290.985M1.40.31.11.14（80%）1.0751.142M1.60.351.251.32（75%）1.2211.321M1.80.351.451.52（75%）1.4211.521M20.41.61.65（80%）1.5671.679M2.20.451.751.83（75%）1.7131.838M2.50.452.12.13（75%）2.0132.138M30.52.52.59（75%）2.4592.599M3.50.62.93.01（75%）2.853.01M40.73.33.39（80%）3.2423.422M4.50.753.83.85（80%）3.6883.878M50.84.24.31（80%）4.1344.334M6155.13（80%）4.9175.135M7166.13（80%）5.9176.153M81.256.86.85（85%）6.6476.912M91.257.87.85（85%）7.6477.912M101.58.58.62（85%）8.3768.676M111.59.59.62（85%）9.3769.676M121.7510.310.4（85%）10.10610.441M1421212.2（85%）11.83512.21M1621414.2（85%）13.83514.21M182.515.515.7（85%）15.29415.744M202.517.517.7（85%）17.29417.744M222.519.519.7（85%）19.29419.744M2432121.2（85%）20.75221.252M2732424.2（85%）23.75224.252M303.526.526.6（90%）26.21126.771M333.529.529.6（90%）29.21129.771M3643232.1（90%）31.6732.27M3943535.1（90%）34.6735.27M424.537.537.6（90%）37.12937.799M454.540.540.6（90%）40.12940.799M4854343.1（90%）42.58743.297注1）M1.4以下等级：5H，M1.6以上等级6H。注2）基于JIS B 0209-1982标准。底孔径(公制螺纹.美制统一螺纹)底孔径=D-2(0.541266P)(嵌合率/100)备注：P：螺距D：外螺纹大径0.923760.42492 螺纹底孔直径表（切削）注1）等级：6H公制 细牙螺纹 (切削方式加工）注2）基于JIS B 0211-1982标准。螺纹尺寸钻头直径嵌合度区分嵌合度区分螺纹尺寸钻头直径嵌合度区分嵌合度区分中（注1）2级（注2）中（注1）2级（注2）中（注1）内螺纹小径中（注1）内螺纹小径2级（注2）最小直径最大直径2级（注2）最小直径最大直径M2.50.352.22.22（75%）2.1212.221M2512424.13（80%）23.91724.153M30.352.72.72（75%）2.6212.721M261.524.524.62（85%）24.37624.676M3.50.353.23.22（75%）3.1213.221M2722525.2（85%）24.83525.21M40.53.53.59（75%）3.4593.599M271.525.525.62（85%）25.37625.676M4.50.544.09（75%）3.9594.099M2712626.13（80%）25.91726.153M50.54.54.59（75%）4.4594.599M2822626.2（85%）25.83526.21M5.50.555.09（75%）4.9595.099M281.526.526.62（85%）26.37626.676M60.755.35.35（80%）5.1885.378M2812727.13（80%）26.91727.153M70.756.36.35（80%）6.1886.378M3032727.2（85%）26.75227.252M8177.13（80%）6.9177.153M3022828.2（85%）27.83528.21M80.757.37.35（80%）7.1887.378M301.528.528.62（85%）28.37628.676M9188.13（80%）7.9178.153M3012929.13（80%）28.91729.153M90.758.38.35（80%）8.1888.378M3223030.2（85%）29.83530.21M101.258.88.85（85%）8.6478.912M321.530.530.62（85%）30.37630.676M10199.13（80%）8.9179.153M3333030.2（85%）29.75230.252M100.759.39.35（80%）9.1889.378M3323131.2（85%）30.83531.21M1111010.13（80%）9.91710.153M331.531.531.62（85%）31.37631.676M110.7510.310.35（80%）10.18810.378M351.533.533.62（85%）33.37633.676M121.510.510.62（85%）10.37610.676M3633333.2（85%）32.75233.252M121.2510.810.85（85%）10.64710.912M3623434.2（85%）33.85334.21M1211111.13（80%）10.91711.153M361.534.534.62（85%）34.37634.676M141.512.512.62（85%）12.37612.676M381.536.536.62（85%）36.37636.676M1411313.13（80%）12.91713.153M3933636.2（85%）35.57236.252M151.513.513.62（85%）13.37613.676M3923737.2（85%）36.83537.21M1511414.13（80%）13.91714.153M391.537.537.62（85%）37.37637.676M161.514.514.62（85%）14.37614.676M4033737.2（85%）36.75237.252M1611515.13（80%）14.91715.153M4023838.2（85%）37.83538.21M171.515.515.62（85%）15.37615.676M401.538.538.62（85%）38.37638.676M1711616.13（80%）15.91716.153M4243838.1（90%）37.6738.27M1821616.2（85%）15.83516.21M4233939.2（85%）38.75239.252M181.516.516.62（85%）16.37616.676M4224040.2（85%）39.83540.21M1811717.13（80%）16.91717.153M421.540.540.62（85%）40.37640.676M2021818.2（85%）17.83518.21M4544141.1（90%）40.6741.27M201.518.518.62（85%）18.37618.676M4534242.2（85%）41.75242.252M2011919.13（80%）18.91719.153M4524343.2（85%）42.83543.21M2222020.2（85%）19.83520.21M451.543.543.62（85%）43.37643.676M221.520.520.62（85%）20.37620.676M4844444.1（90%）43.6744.27M22121 21.13（80%）20.91721.153M4834545.2（85%）44.75245.252M24222 22.2（85%）21.83522.21M4824646.2（85%）45.83546.21M241.522.5 22.62（85%）22.37622.676M481.546.546.62（85%）46.37646.676M24123 23.13（80%）22.91723.153M5034747.2（85%）46.75247.252M2522323.2（85%）22.83523.21M5024848.2（85%）47.83548.21M251.523.523.62（85%）23.37623.676M501.548.548.62（85%）48.37648.676 螺纹底孔直径表（切削）美制统一 粗牙螺纹 美制统一 细牙螺纹螺纹尺寸钻头直径2B级螺纹内螺纹小径螺纹尺寸钻头直径2B级螺纹内螺纹小径底孔直径最小直径最大直径底孔直径最小直径最大直径1-64UNC1.551.57（65%）1.4251.5820-80UNF1.251.3（65%）1.1821.305 2-561.81.86（65%）1.6951.8711-721.551.61（65%）1.4741.612 3-482.12.14（65%）1.9412.1462-641.851.9（65%）1.7561.912 4-402.32.36（70%）2.1572.3853-562.12.17（70%）2.0252.197 5-402.62.69（70%）2.4872.6974-482.42.44（70%）2.2712.458 6-322.82.86（75%）2.6422.8955-442.72.74（70%）2.5512.74 8-323.43.52（75%）3.3023.536-402.93.02（70%）2.823.022 10-243.93.91（80%）3.6833.9628-363.53.59（75%）3.4043.606 12-244.54.57（80%）4.3444.59710-324.14.14（80%）3.9634.165 1/4-205.15.25（80%）4.9795.257 12-284.64.7（80%）4.4964.7245/16-186.66.72（80%）6.4016.731 1/4-285.55.56（80%）5.365.588 3/8-1688.15（80%）7.7988.1535/16-246.97.02（80%）6.7827.0357/16-149.49.5（80%）9.1449.55 3/8-248.58.61（80%）8.3828.636 1/2-1310.811（80%）10.59211.0237/16-209.910.01（80%）9.72910.0339/16-1212.212.3（85%）11.98912.446 1/2-2011.511.6（80%）11.32911.607 5/8-1113.613.8（85%）13.38613.8689/16-1812.913.07（80%）12.75113.081 3/4-1016.516.8（80%）16.30716.84 5/8-1814.514.65（80%）14.35114.681 7/8-919.519.6（85%）19.17719.761 3/4-1617.517.59（85%）17.32317.678 1-822.222.5（85%）21.97122.606 7/8-1420.520.6（85%）20.2720.6751 1/8-72525.2（85%）24.63825.349 1-1223.223.5（85%）23.11423.5711 1/4-728.228.4（85%）27.81328.524 1 1/8-1226.526.7（80%）26.28926.7461 3/8-630.831（85%）30.35331.115 1 1/4-1229.529.9（80%）29.46429.9211 1/2-63434.2（85%）33.52834.29 1 3/8-1232.833（80%）32.63933.0961 3/4-539.539.8（85%）38.96439.827 1 1/2-123636.2（80%）35.81436.2712-4 1/245.253.3（90%）44.67945.593 螺纹底孔直径表（切削）缝纫机螺纹 缝纫机螺纹螺纹尺寸钻头直径2级螺纹2级内螺纹小径螺纹尺寸钻头直径2B级螺纹内螺纹小径底孔直径最小直径最大直径底孔直径最小直径最大直径SM 1/16-801.251.28（75%）1.2111.2815/64-641.551.57（80%）1.5131.5933/32-1002.12.15（70%）2.0812.1563/32-1001.851.91（80%）1.8411.936 1/8-442.52.58（80%）2.4852.605 1/8-402.452.52（80%）2.4212.5519/64-402.852.91（80%）2.8182.94811/64-403.653.71（80%）3.6123.7423/16-323.93.94（80%）3.823.983/16-283.73.82（80%）3.6843.8447/32-324.74.73（80%）4.6144.77415/24-284.95.01（80%）4.8755.055 1/4-405.65.69（80%）5.5965.726 1/4-285.35.41（80%）5.2725.452SM 1/4-245.15.25（80%）5.0865.2669/32-286.16.2（80%）6.0666.2569/32-205.75.82（80%）5.6345.8245/16-286.96（80%）6.867.055/16-246.76.84（80%）6.6746.8645/16-186.36.38（85%）6.2546.444 3/8-288.58.58（80%）8.4478.637 3/8-187.97.97（85%）7.8438.0537/16-2810.110.17（80%）10.03410.2247/16-169.39.36（85%）9.229.44 1/2-2811.711.76（80%）11.62211.812 1/2-2011.311.38（80%）11.1911.41 1/2-1210.310.36（85%）10.1810.42螺纹底孔直径表（切削）英制 粗牙螺纹 螺纹尺寸底孔直径嵌合率A列（硬材质）B列（软材质）A列直径B列直径内螺纹最小径内螺纹最大径W 1/82.62.570.7837088.36 3/163.73.678.485.87088.3 1/45.1576.98370.588.3 5/166.66.57499.570.188.4 3/887.9758069.588.2 7/169.49.373.7806988.8 1/210.710.573.881.26988.2 9/1612.31273.484.46988.2 5/813.713.573.580.369.688.5 3/416.716.572.378.469.988.3 7/819.519.375.480.970.188.4122.42273.883.67188.21 1/82524.876.981.37288.41 1/428.32874.380.77288.41 3/830.530.381.685.373.888.61 1/233.833.579.384.873.888.61 5/83635.781.185.774.888.31 3/439.23980.783.874.888.31 7/841.841.580.684.774.788.424544.780.284.474.788.4 螺纹底孔直径表（挤压）公制螺纹（NRT丝锥）公制螺纹（HRT丝锥）螺纹尺寸1级螺纹用底孔直径2级螺纹用底孔直径螺纹尺寸1级螺纹用底孔直径2级螺纹用底孔直径RH最小最大RH最小最大RH最小最大RH最小最大精度（嵌合率%）精度（嵌合率%）精度（嵌合率%）精度（嵌合率%）M10.2520.87/0.8940.9/0.92M10.2520.87/0.8940.9/0.92M1.10.2520.97/0.9941.0/1.02M1.20.2521.07/10.941.1/1.12M1.20.2521.07/10.941.1/1.12M1.40.321.244/1.26341.27/1.294M1.40.321.244/1.26341.27/1.294M1.60.3521.40/1.4441.40/1.45M1.70.3521.51/1.5441.54/1.58M1.70.35-1.50/1.5441.50/1.55M20.421.78/1.8241.81/1.85M1.80.3521.60/1.6441.60/1.64M2.30.422.08/2.1242.11/2.15M20.421.77/1.8241.77/1.82M2.50.4522.25/2.2942.28/2.33M20.2521.858/1.887-1.858/1.887M2.60.4522.35/2.3942.38/2.43M2.30.4-2.07/2.1242.07/2.13M30.532.74/2.7852.76/2.81M2.50.4532.24/2.3052.24/2.31M3.50.633.18/3.2153.2/3.26M2.60.45-2.34/2.4052.34/2.41M40.743.63/3.6763.65/3.7M30.632.72/2.7352.66/2.73M50.844.57/4.6264.59/4.66M30.552.72/2.7762.72/2.78M6145.45/5.5175.48/5.57M30.3532.80/2.8452.80/2.85M7146.45/6.5176.48/6.57M3.50.633.16/3.2153.16/3.25M81.2557.31/7.3877.34/7.41M40.7533.57/3.6463.57/3.64M8147.45/7.5177.48/7.57M40.763.60/3.6673.60/3.66M101.559.16/9.2279.18/9.28M40.533.71/3.7763.71/3.79M101.2559.31/9.3879.34/9.41M50.934.49/4.5974.49/4.59M10159.46/9.5279.48/9.57M50.834.55/4.6284.55/4.64M121.75511.01/11.08811.05/11.15M50.534.72/4.7764.72/4.79M121.5511.16/11.22711.18/11.28M6145.43/5.5275.43/5.55M121.25511.31/11.38711.34/11.41M60.7535.57/5.6475.57/5.66M121511.46/11.52711.48/11.57M142612.83/12.951012.92/13.04英英式式管管用用平平行行螺螺纹纹（NRTNRT丝丝锥锥）M141.5513.16/13.22913.21/13.3M162614.87/14.951014.92/15.04螺纹尺寸RH最小最大M161.5515.16/15.22915.21/15.3精度（嵌合率%）M182.5616.57/16.671116.63/16.78PF 1/869.24/9.35(100/80)M181.5617.17/17.231017.22/17.31 1/4712.41/12.62(100/75)M202.5618.57/18.671118.63/18.78 3/8715.92/16.12(100/75)M201.5619.17/19.231019.22/19.31 1/2819.93/20.15(100/80)3/4825.41/25.64(100/80)螺纹底孔直径表（挤压）美制统一 粗牙螺纹（NPT丝锥）美制统一细牙螺纹（NPT丝锥）螺纹尺寸2B级螺纹用底孔直径3B级螺纹用底孔直径螺纹尺寸2B级螺纹用底孔直径 3B级螺纹用底孔直径RH最小最大RH最小最大RH最小最大RH最小最大精度（嵌合率%）精度（嵌合率%）精度（嵌合率%）精度（嵌合率%）2-56UNC41.96/2.0231.95/2.01 2-64UNF31.98/2.0421.97/2.033-4842.25/2.3232.23/2.31 3-5642.29/2.3532.28/2.344-4052.52/2.6032.50/2.58 4-4842.57/2.6432.56/2.635-4052.86/2.9332.83/2.91 5-4442.88/2.9532.87/2.946-3253.09/3.1733.06/3.14 6-4053.19/3.2633.16/3.228-3263.75/3.8343.74/3.82 8-3653.80/3.8843.79/3.86 10-2464.26/4.3544.24/4.32 10-3254.41/4.4844.40/4.46 12-2464.92/5.0144.90/4.96 12-2855.00/5.0844.99/5.06 1/4-2065.66/5.7645.64/5.74 1/4-2855.86/5.9345.85/5.92 5/16-1877.18/7.2957.15/7.24 5/16-2467.38/7.4657.36/7.43 3/8-1678.66/8.7858.63/8.73 3/8-2468.96/9.0558.95/9.02 7/16-14710.11/10.25510.08/10.19 7/16-20710.44/10.54510.41/10.49 1/2-13811.62/11.78611.60/11.68 1/2-20712.02/12.12512.00/12.05 9/16-121013.14/13.27813.11/13.24 9/16-18913.55/13.66713.53/13.58 5/8-111114.62/14.76814.58/14.67 5/8-18915.14/15.25715.11/15.17 3/4-101217.67/17.88917.63/17.74 3/4-161018.22/18.32718.18/18.25 7/8-91220.68/20.85920.64/20.75 7/8-141121.27/21.38821.23/21.27 1-81323.65/23.841023.61/23.74 1-121224.28/24.41924.24/24.32 螺纹底孔直径表(嵌套螺纹用）公公制制粗粗牙牙螺螺纹纹 美美制制统统一一 粗粗牙牙螺螺纹纹螺纹尺寸底孔直径钻头直径螺纹尺寸底孔直径钻头直径最小直径最大直径最小直径最大直径M2.50.452.62.652.6 2-56UNC2.292.392.3M2.60.452.72.752.7 3-482.642.742.7M30.53.123.23.1 4-402.953.073M40.74.174.34.2 5-403.253.383.3M50.85.165.335.2 6-323.663.813.7M616.256.426.3 8-324.324.474.4M81.258.318.528.4 10-245.055.215.1M101.510.3710.6210.5 12-245.615.775.7M121.7512.4312.7312.5 1/4-206.636.786.7M14214.4914.8314.5 5/16-188.338.488.4M16216.4916.8316.5 3/8-169.9110.1110M182.518.5819.0419 7/16-1411.5110.7611.5M202.520.5821.0421 1/2-1313.0813.3413.1M222.522.5823.0423 9/16-1214.6814.9414.7M24324.722.2525美美制制统统一一 细细牙牙螺螺纹纹公公制制细细牙牙螺螺纹纹螺纹尺寸底孔直径钻头直径螺纹尺寸底孔直径钻头直径最小直径最大直径最小直径最大直径 4-48UNF2.973.053M10110.2510.4210.3 6-403.663.783.7M101.2510.3110.5210.4 8-364.324.444.4M121.2512.3112.5212.5 10-324.985.135M121.512.3712.6212.5 1/4-286.536.716.6M141514.3714.6214.5 5/16-248.28.388.2M161.516.3716.6216.5 3/8-249.789.969.8M181.518.3718.6218.5 7/16-2011.4311.6311.5M201.520.3720.6220.5 1/2-2013.0313.2613.1M20220.4720.8320.5 9/16-1814.6614.8814.7M221.522.3722.6222.5 5/8-1816.2616.4816.3M241.524.3724.6224.5 3/4-1619.4319.6819.5M24224.4724.8324.5 7/8-1422.6122.8622.7M301.530.3730.6230.5 1-1225.7626.0426公公制制螺螺纹纹（NRTNRT丝丝锥锥）螺纹尺寸RH精度最小最大（嵌合率%）螺纹尺寸RH精度最小最大（嵌合率%）M30.533.39/3.43（100/80）M101.5511.11/11.17（100/90）M40.744.54/4.58（100/85）M101.25510.93/11.01（100/85）M50.845.61/5.66（100/85）M121.75513.28/13.25（100/90）M6146.75/6.81（100/85）M121.5513.11/13.17（100/90）M81.2558.93/9.01（100/85）M121.25512.93/13.01（100/85）螺螺纹纹底底孔孔直直径径表表相对于JISB 0205（公制粗牙螺纹）相对于JISB 0205（公制细牙螺纹）的钻头直径 单位：mm的钻头直径 单位：mm螺纹钻头直径螺纹钻头直径螺纹钻头直径公称直径螺距公称直径螺距公称直径螺距M1.00.250.75M2.53.50.352.2M272225M1.10.250.85M33.50.352.7M271.51.525.5M1.20.250.95M3.53.50.353.2M271.5126M1.40.31.10M40.50.53.5M282226M1.60.351.25M4.50.50.54M281.81.526.5M1.70.351.35M50.50.54.5M281.8127M1.80.351.45M5.50.50.55M303327M20.41.60M60.750.755.3M302228M2.20.451.75M70.750.756.3M301.51.528.5M2.30.41.90M8117M301129M2.50.452.10M80.750.757.3M322230M2.60.452.20M9118M321.51.530.5M30.50.52.50M90.750.758.3M333330M3.50.62.90M101.251.258.8M332231M40.70.73.30M10119M331.51.531.5M4.50.753.80M100.750.759.3M351.51.533.5M50.80.84.20M111110M363333M615.00M110.750.7510.3M362234M716.00M121.51.510.5M361.51.534.5M81.256.80M121.251.2510.8M381.51.536.5M91.257.80M121111M393336M101.58.50M141.51.512.5M392237M111.59.50M141.251.2512.8M391.51.537.5M121.7510.30M141113M403337M14212.00M151.51.513.5M402238M16214.00M151114M401.51.538.5M182.515.50M161.51.514.5M424438M202.517.50M161115M423339M222.519.50M171.51.515.5M422240M24321.00M171116M421.51.540.5M27324.00M182216M454441M303.526.50M181.51.516.5M453342M333.529.50M181117M452243M36432.00M202218M451.51.543.5M39435.00M201.51.518.5M484444M424.537.50M201119M483345M454.540.50M222220M482246M48543.00M221.51.520.5M481.51.546.5M52547.00M221121M503347M565.550.50M242222M502248M605.554.50M241.51.522.5M501.51.548.5M64658.00M241123M524447M68662.00M252223M523349M251.51.523.5M522250M251.5124M521.51.550.5M261.51.524.5底孔径(公制螺纹.美制统一螺纹)底孔径=D-2(0.541266P)(嵌合率/100)备注：P：螺距 D：外螺纹大径