螺纹攻牙-钻孔直径对照表

******本表依据二级牙制订

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*0.5M3.0*0.6M3.5*0.6M4.0*0.7M4.0*0.75M4.5*0.75M5.0*0.8M5.0*0.9M6.0*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0.750.850.951.101.251.351.451.601.751.902.102.202.502.402.903.303.253.804.204.105.006.006.807.808.509.5010.3012.0014.0015.5017.5019.5021.0024.0026.50二级牙钻孔径最大0.7850.8850.9851.1421.3211.4211.5211.6791.8381.9792.1382.2382.5992.4403.0103.4223.3263.8784.3344.1705.1536.1536.9127.9128.6769.67610.44112.21014.21015.74417.74419.74421.25224.25226.771最小0.7290.8290.9291.0751.2211.3211.4211.5671.7131.8672.0132.1132.4592.2802.8503.2423.1063.6884.1343.9304.9175.9176.6477.6478.3759.37610.10611.83513.83515.29417.29419.29420.75223.75226.211M12*1.0M12*0.5M14*1.5M14*1.0M15*1.5M15*1.0M16*1.5M16*1.0M17*1.5M17*1.0M18*2.0M18*1.5M18*1.0M20*2.0M20*1.5M20*1.0M22*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*1.511.0011.5012.5013.0013.5014.0014.5015.0015.5016.0016.0016.5017.0018.0018.5019.0020.0020.5021.0022.0022.5023.0023.0023.5024.0024.5025.0025.5026.0026.0026.5027.0027.0028.0028.5029.0030.0030.5030.0031.0031.5033.5033.0034.0034.50公制细螺 纹规格标准径二级牙钻孔径最大11.15311.52012.67613.15313.67614.15314.67615.15315.67616.15316.21016.67517.15318.21018.67619.15320.21020.67621.15322.21022.67623.15323.21022.67624.15324.67625.21025.67626.15326.21026.67627.15327.25228.21028.67629.15330.21030.67630.25231.21031.67633.67633.25234.21034.676最小10.91711.40012.37612.91713.37613.91714.37614.91715.37615.91715.83516.37616.91717.83518.37618.91719.83520.37620.91721.83523.37622.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626.91726.75227.83528.37628.91729.83530.37629.75230.83531.37633.37632.75233.83534.376公制迫牙丝攻钻孔径规格G1-G6M1.0*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*0.7M5.0*0.8M6.0*1.0M7.0*1.0M8.0*1.25M10*1.5M10*1.25M12*1.75M12*1.250.860.961.061.241.411.511.611.781.952.082.252.352.733.173.624.565.456.457.319.189.3111.0411.31美制迫牙丝攻钻孔径规格G9............................3.694.645.556.557.449.329.4411.2111.44NO. 2-56UNCNO. 3-48NO. 4-40NO. 5-40NO. 6-32NO. 8-32NO.10-24NO.12-241/4 - 205/16 - 183/8 - 167/16 - 141/2 - 13 NO. 2-64UNFNO. 3-56NO. 4-48NO. 5-44NO. 6-40NO. 8-36NO.10-32NO.12-291/4 - 285/16 - 243/8 - 247/16 - 201/2 - 20英制螺纹规格G9....................8.8110.3011.82......................10.5412.13W1/8 - 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精度等级G7-G80.880.981.081.251.431.531.631.801.982.102.282.382.753.203.654.605.506.507.389.259.3811.1211.38精度等级G1-G61.942.232.502.833.073.734.244.90..........1.972.272.562.863.163.784.394.995.857.36......钻孔径硬材2.653.253.755.106.608.009.4010.7012.3013.7016.7019.5022.4025.0028.30G7-G8..........3.774.304.965.727.248.7410.2011.27............4.435.045.907.419.0010.4812.07软材2.603.203.705.006.507.909.3010.5012.0013.5016.5019.3022.0024.8028.00针车用螺纹规格SM1/8 - 40SM1/8 - 44SM9/64 - 40SM11/64 - 40SM3/16 - 32滚造径2.735-2.6882.769-2.7223.128-3.0833.855-3.8054.205-4.1554.143-4.093?5.325-5.5705.890-5.7355.721-5.3666.508-6.6488.092-8.4328.880-8.01510.466-10.40110.037-9.95711.319-11.74913.400-13.425美制粗螺纹规格（UNC）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)1/4 - 205/16 - 183/8 - 167/16 - 141/2 - 139/16 - 125/8 - 113/4 - 107/8 - 91 -81 -1/8 - 71 -1/4 - 1 -3/8 - 1 -1/2 - 61 -3/4 - 52-4-1/2SM3/16 - 28标准径1.551.802.102.302.602.803.403.904.505.106.608.009.4010.8012.2013.6016.5019.5022.2025.0028.2030.8034.0039.5045.20二级牙钻孔径最大1.5821.8712.1462.3852.6972.8953.5303.9624.5975.2576.7318.1539.55011.02312.44612.86818.84019.76122.60625.34928.52431.11534.29039.82745.593英制管螺纹规格PS 1/16 - 28PS 1/8 - 28PS 1/4 - 19PS 3/8 - 19PS 1/2 - 14PS 3/4 - 14PS 1 - 11PS 1-1/4 -11PS1-1/2 - 11PS2 - 11SM7/22 - ?最小1.4521.6951.9412.1572.4872.6423.3023.6834.3444.9796.4017.7989.14410.59211.98911.38616.30719.17721.97124.63827.81330.35333.52838.96444.679标准径6.508.5011.4015.0018.5024.0030.2038.8044.8056.50钻孔径最大6.6328.63711.54915.05418.77324.25930.47139.13245.02556.836SM15/64 - 28SM1/4 - 40SM1/4 - 28SM9/32 - 28SM11/32 - 28 SM3/8 - 28SM7/16 - 28SM7/16 - 16SM1/2 - 20SM9/16 - 20最小6.4908.49511.34114.84618.48923.97530.11138.77244.66556.476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*0.35M2.6*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*1.25标准径0.800.901.001.201.401.451.601.751.952.052.202.202.703.203.504.004.505.005.305.506.306.507.007.307.508.008.308.809.009.309.5010.0010.3010.5010.80二级牙钻孔径最大0.8210.9211.0211.2211.4211.5001.6211.7851.9852.0612.2212.2462.7213.2213.5994.0994.5995.0995.3785.5506.3786.5507.1537.3787.5208.1538.3788.9129.1539.3788.52010.15310.37810.67610.912最小0.7830.8830.9831.1831.3831.4601.5831.7291.9292.0012.1212.1862.6213.1213.4593.9594.4594.9595.1885.4006.1886.4006.9177.4887.4007.9178.1888.6478.9179.1889.4009.91710.18810.37510.647英制管螺纹规格PT1/16 - 28PT1/8 - 28PT1/4 - 19PT3/8 - 19PT1/2 - 14PT3/4 - 14PT1 - 11PT1-1/4 - 11PT1-1/2 -11PT2 - 11标准径最大6.108.1010.7014.2017.6023.0029.0037.5043.4054.90最小6.208.2011.0014.5018.0023.5029.5038.0044.0055.500?6.2448.24910.96214.44817.97923.37829.45937.97643.86955.412?6.3848.38811.17414.65818.26323.66329.82238.33944.23255.844公制螺纹规格M3 * 0.5M3.0 * 0.6M3.5 * 0.6M4.0 * 0.7M4.0 * 0.75M4.5 * 0.75M5.0 * 0.8M5.0 * 0.9M6.0 * 1.0M7.0 * 1.0M8.0 * 1.0M8.0 * 1.25美制细螺纹规格（UNF）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)1/4 - 285/16 - 243/8 - 247/16 - 201/2 - 203/16 - 185/8 - 183/4 - 167/8 - 141 -121-1/8 - 121-1/4 - 121-3/8 - 121-1/2 - 12滚造径2.63 - 2.602.56 - 2.533.06 - 3.033.49 - 3.453.45 - 3.41 3.96 - 3.92 4.43 - 4.384.36 - 4.34 5.30- 6.256.30 - 6.25 7.28 - 7.237.12-7.07标准径1.251.551.852.102.402.702.903.504.104.605.505.908.509.9011.5012.9014.5017.5020.5023.2026.5029.5032.8036.00二级牙钻孔径最大1.3051.6121.9122.1972.4582.7403.0223.6064.1654.7245.5887.0358.63610.03311.60713.08114.68117.67820.67523.57126.74629.92133.09636.271最小1.1821.4741.7562.0252.2712.5512.8203.4043.9634.4962.3605.7828.3829.72911.32912.75114.35117.32320.27023.11426.28929.46432.63935.814美制特细螺纹规格（UNEF）NO. 12 -321/4 - 325/16 - 323/8 - 327/16 - 281/2 - 289/16 - 245/8 - 243/4 - 207/8 - 201 - 20英制管螺纹钻孔径规格?1/16 - 271/8 - 271/4 - 183/8 - 181/2 - 143/4 - 141 - 11-1/21-1/4 - 11-1/21-1/2 - 11-1/22 - 11-1/26.108.3310.7214.2717.4822.6328.5837.3143.6655.58标准径4.705.607.108.7010.2011.8013.2014.8017.8021.0024.00二级牙钻孔径最大4.8255.6907.2648.86510.33811.93813.38614.98617.95821.13324.308最小4.6235.4867.0878.66110.13511.70913.13214.73217.67820.85324.028NPT?6.258.4311.1314.2717.8623.0128.9837.6944.0455.96NPS6.358.7411.1314.6818.2523.4229.3638.1044.4556.36英制电器螺 纹规格28A38A48A58A68A钻孔径4.0 - 4.2?3.0 - 3.22.7 - 2.82.4 - 2.5