螺丝攻牙钻孔径和滚造径对照表公 制 粗 螺 纹规格M1.0*0.25M1.1*0.25M1.2*0.25M1.4*0.3M1.6*0.35M1.7*0.35M1.8*0.35M2.0*0.4M2.2*0.45M2.3*0.4M2.5*0.45M2.6*0.45M3.0*0.5M3.5*0.6M4.0*0.7M4.5*0.75标准径0.750.850.951.11.251.351.451.61.751.92.12.22.52.93.33.82级牙钻孔径最大0.7850.8850.9851.1421.3211.4211.5211.6791.8381.9792.1382.2382.5993.013.4223.878最小0.7290.8290.9291.0751.2211.3211.4211.5671.7131.8672.0132.1132.4592.853.2423.688规格M5.0*0.8M6.0*1.0M7.0*1.0M8.0*1.25M9.0*1.25M10*1.5M11*1.5M12*1.75M14*2.0M16*2.0M18*2.5M20*2.5M22*2.5M24*3.0M27*3.0M30*3.5标准径4.2566.87.88.59.510.3121415.517.519.5212426.52级牙钻孔径最大4.3345.1536.1536.9127.9128.6769.67610.44112.2114.2115.74417.74419.74421.25224.25226.771最小4.1344.9175.9176.6477.6478.3769.37610.10611.83513.83515.29415.29419.29420.75223.75226.211规格 （UNF)(螺丝牙外径）No.0-80(1.524)No.1-72(1.854)No.2-64(2.184)No.3-56(2.515)No.4-48(2.845)No.5-44(3.175)No.6-40(3.505)No.8-36(4.166)No.10-32(4.826)No.12-28(5.846)2001-4-285/16 -24公 制 细 螺 纹规格M1.0*0.2M1.1*0.2M1.2*0.2M1.4*0.2M1.6*0.2M1.7*0.2M1.8*0.2M2.0*0.25M2.2*0.25M2.3*0.25M2.5*0.35标准径0.80.911.21.41.451.61.751.952.052.22级牙钻孔径最大0.8210.9211.0211.2211.4211.51.6211.7851.9852.0612.221最小0.7830.8830.9831.1831.3831.461.5831.7291.9292.0012.121规格M15*1.0M16*1.5M16*1.0M17*1.5M17*1.0M18*2.0M18*1.5M18*1.0M20*2.0M20*1.5M20*1.0标准径1414.51515.5161616.5171818.5192级牙钻孔径最大14.15314.67615.15315.67616.15316.2116.67617.15318.2118.67619.153最小13.91714.37614.91715.37615.91715.83516.37616.91717.83518.37618.917规格（UNF)(螺丝牙外径）No.1 -64(1.854)No.2 -56(2.184)No.3 -48(2.515)No.4 -40(2.845)No.5 -40(3.175)No.6 -32(3.505)No.8 -32(4.166)No.10-24(4.826)No.12-24(5.486)2001-4-20M2.6*0.35M3.0*0.35M3.5*0.35M4.0*0.5M4.5*0.5M5.0*0.5M5.5*0.5M6.0*0.75M6.0*0.5M7.0*0.75M7.0*0.5M8.0*1.0M8.0*0.75M8.0*0.5M9.0*1.0M9.0*0.75M10*1.25M10*1.0M10*0.75M10*0.5M11*1.0M11*0.75M12*1.5M12*1.25M12*1.0M12*0.5M14*1.5M14*1.0M15*1.52.22.73.23.544.555.35.56.36.577.37.588.38.899.39.51010.310.510.81111.512.51313.52.2462.7213.2213.5994.0994.5995.0995.3785.556.3786.557.1537.3787.528.1538.3788.9129.1539.3789.5210.15310.37810.67610.91211.15311.5212.67613.15313.6762.1862.6213.1213.4593.9594.4594.9595.1885.46.1886.46.9177.1887.47.9178.1888.6478.9179.1889.49.91710.18810.37610.64710.91711.412.37612.91713.376M22*2.0M22*1.5M22*1.0M24*2.0M24*1.5M24*1.0M25*2.0M25*1.5M25*1.0M26*1.5M27*2.0M27*1.5M27*1.0M28*2.0M28*1.5M28*1.0M30*3.0M30*2.0M30*1.5M30*1.0M32*2.0M32*1.5M33*3.0M33*2.0M33*1.5M35*1.5M36*3.0M36*2.0M36*1.52020.5212222.5232323.52424.52525.5262626.527272828.5293030.5303131.533.5333434.520.2120.67621.15322.2122.67623.15323.2123.67624.15324.67625.2125.67626.15326.2126.67627.15327.25228.2128.67629.15330.2130.67631.2131.2131.67633.67633.25234.2134.67619.83520.37620.91721.83522.37622.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626.91726.75227.83528.37628.91729.83530.37630.83530.83531.37633.37632.75233.83534.3765/16 -182003-8-167/16 -14规格（UNF)No.12-321/4 -325/16 -323/8 -327/16 -282001-2-28规格M1.0*0.25M1.1*0.25M1.2*0.25M1.4*0.3M1.6*0.35M1.7*0.35M1.8*0.35M2.0*0.4M2.2*0.45M2.3*0.4M2.5*0.45美制迫牙丝攻钻孔径规格No. 2-56UNCNo. 3-48No. 4-40No. 5-40No. 6-32No. 8-32No.10-24No.12-242001-4-205/16 -182003-8-167/16 -142001-2-13精 度 等 级G4-G622.232.52.833.1753.734.244.9_ __ __ __ __ _G7-G8_ __ __ __ __ _3.774.34.965.727.248.7410.211.27G9_ __ __ __ __ __ __ __ __ __ _8.8110.311.82规格No. 2-64UNCNo. 3-56No. 4-48No. 5-44No. 6-40No. 8-36No.10-32No.12-282001-4-285/16 -242003-8-247/16 -202001-2-20精 度 等 级G4-G61.972.272.562.863.163.784.394.995.857.36_ __ __ _G7-G8_ __ __ __ __ __ _4.435.045.97.41910.4812.07G9_ __ __ __ __ __ __ __ __ __ __ _10.5412.13M2.6*0.45注：迫牙丝攻之有所变动，因此於参考上表规格PT 1/16 PT 1/8 -PT 1/4 -PT 3/8 -PT 1/2 -PT 3/4 -PT 1 -1PT 1-1/4PT 1-1/2PT 2 -1英 制 管 螺 纹钻孔径规格PC 1/16 -28RP 1/8 -28G 1/4 -19共 3/8 -19用 1/2 -14前 3/4 -14用 1 -11PS 1-1/4-111-1/2-112月11日标准径6.58.511.41518.52430.238.844.856.5英 制 螺 纹规格W1/8 -40W5/32 -32W3/16 -24W1/4 -20W5/16 -18W3/8 -16W7/16 -14W1/2 -12W9/16 -12W5/8 -11W3/4 -10W7/8 -9W1 -8W1-1/8 -7W1-1/4 -7钻孔径硬材2.653.253.755.16.689.410.712.313.716.719.522.42528.3软材2.63.23.756.57.99.310.51213.516.519.32224.828规格2BA3BA4BA5BA6BA规格最 大6.6328.63711.54915.05418.77324.25930.47139.13245.02556.836最 小6.498.49511.34114.84618.48923.97530.11138.77244.66556.476规格1/16 -272001-8-272001-4-182003-8-182001-2-142003-4-141 -11-1/21-1/4 -11-1/21-1/2 -11-1/22 -11-1/2美 制 管 螺 纹标准径N P T使用绞刀时不用绞刀时6.18.3310.7214.2717.4822.6328.5837.3143.6655.586.258.4311.1314.2717.8623.0128.9837.6944.0455.96滚造径2.63 - 2.602.56 - 2.533.06 - 3.033.49 - 3.453.96 - 3.924.43 - 4.385.30 - 5.256.30 - 6.257.28 - 7.237.12 - 7.07滚造径4.0-4.23.0-3.22.7-2.82.4-2.5N P S6.358.7411.1314.6818.2623.4229.3638.144.4556.36公 制 螺 纹M3.0*0.5M3.0*0.6M3.5*0.6M4.0*0.7M4.5*0.75M5.0*0.8M6.0*1.0M7.0*1.0M8.0*1.0M8.0*1.25英 制 电 器 螺 纹对照表美 制 细 螺 纹标准径2级牙钻孔径最大最小规格标准径2级牙钻孔径最大最小1.251.551.852.12.42.72.93.54.14.65.56.91.3051.6121.9122.1972.4582.743.0223.6064.1654.7245.5887.0351.1821.4741.7562.0252.2712.5512.823.4043.9634.4965.366.7822003-8-247/16 -202001-2-209/16 -182005-8-182003-4-162007-8-141月12日1-1/8-121-1/4-121-3/8-121-1/2-128.59.911.512.914.517.520.523.226.529.532.8368.63610.03311.60713.08114.68117.67820.67523.57126.74629.92133.09636.2718.3829.72911.32912.75114.35117.32320.2723.11426.28929.46432.63935.814美 制 粗 螺 纹标准径2级牙钻孔径最大最小规格标准径2级牙钻孔径最大最小1.551.82.12.32.62.83.43.94.55.11.5821.8712.1462.3852.6972.8953.533.9624.5975.2571.4251.6951.9412.1572.4872.6423.3023.6834.3444.9792001-2-139/16 -122005-8-112003-4-102007-8-91月8日1-1/8-71-1/4-71-3/8-61-1/2-610.812.213.616.519.522.22528.230.83411.02312.44612.86818.8419.76122.60625.34928.52431.11534.2910.59211.98913.38616.30719.17721.97124.63827.81330.35333.5286.689.46.7318.1539.556.4017.7989.1441-3/4-52 -4-1/239.545.239.82745.59338.96444.679美 制 特 粗 螺 纹标准径4.75.67.18.710.211.82级牙钻孔径最大4.8265.697.2648.86510.33811.938最小4.6235.4867.0878.66110.13511.709规格9/16 -242005-8-242003-4-202007-8-201月20日标准径13.214.817.821242级牙钻孔径最大13.38614.98617.95821.13324.308最小13.13214.73217.67820.85324.028公制迫牙丝攻钻孔径精 度 等 级G4-G60.860.961.061.241.411.511.611.781.952.082.25G7-G80.880.981.081.251.431.531.631.81.982.12.28G9_ __ __ __ __ __ __ __ __ __ __ _规格M3.0*0.5M3.5*0.6M4.0*0.7M5.0*0.8M6.0*1.0M7.0*1.0M8.0*1.25M10*1.5M10*1.25M12*1.75M12*1.25精 度 等 级G4-G62.733.173.624.565.456.457.319.189.3111.0411.31G7-G82.753.23.654.65.56.57.389.259.3811.1211.38G9_ __ _3.694.645.556.557.449.329.4411.2111.442.352.38_ _丝攻之钻孔径，在上表所列之数值，由於被加工材料之材质、硬度、形状、尺寸等之影响，多少会有所变动，因此於参考上表之同时，亦请增减若干。英 制 管 螺 纹规格1/16 -281/8 -281/4 -193/8 -191/2 -143/4 -14 1 -111-1/4-111-1/2-11 2 -11有效牙部之长度（最小）标准长度（最小）中之毋中之毋螺牙内径螺牙内径使用绞刀时不用绞刀时6.18.110.714.217.6232937.543.454.96.28.21114.51823.529.5384455.56.2448.24910.96214.44817.97923.37829.45937.97643.86955.4126.3848.38811.17414.65818.26323.66329.82238.33944.23255.844标准径针 车 用 螺 纹规格SM 1/8 -40SM 1/8 -44SM 9/64 -40SM11/64 -40SM 3/16 -32SM 3/16 -28SM 7/32 -32SM15/64 -28SM 1/4 -40SM 1/4 -28SM 9/32 -28SM11/32 -28SM 3/8 -28SM 7/16 -28SM 7/16 -16SM 1/2 -20SM 9/16 -20滚造径2.735 - 2.6882.769 - 2.7223.128 - 3.0833.855 - 3.8054.205 - 4.1554.143 - 4.0935.003 - 4.9555.325 -5.5705.890 - 5.7355.721 - 5.3666.508 - 6.6488.092 - 8.4328.880 - 8.01510.466 - 10.40110.037 - 9.96711.819 - 11.74913.400 - 13.425