螺纹攻牙钻孔直径和滚造直径对照表.docx

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1、本表所推选钻头孔径，是针对攻牙加工时，能够很容易的了解钻头直径，而依据市售之标准钻头所选定的，在使用钻头的情况下，由于钻头的形状及尺寸，精度，被钻孔之材质等，对于所钻孔的尺寸，精度有很大影响，所以使用本表之钻孔径，若有不当之处，应实际状况适当的变更钻头直径，本表依据2级牙制订。公 制 粗 螺 纹规格标准径2级牙钻孔径最大最小M1.00.250.750.7850.729M1.10.250.850.8850.829M1.20.250.950.9850.929M1.40.31.101.1421.075M1.60.351.251.3211.221M1.70.351.351.4211.321M1.80.

2、351.451.5211.421M2.00.41.601.6791.567M2.20.451.751.8381.713M2.30.41.901.9791.867M2.50.452.102.1382.013M2.60.452.202.2382.113M3.00.52.502.5992.459M3.00.62.402.442.280M3.50.62.903.0102.850M4.00.73.303.4223.242M4.00.753.253.3263.106M4.50.753.803.8783.688M5.00.84.204.3344.134M5.00.94.104.1703.930M6.01.0

3、5.005.1534.917M7.01.06.006.1535.917M8.01.256.806.9126.647M9.01.257.807.9127.647M101.58.508.6768.376M111.59.509.6769.376M121.7510.3010.44110.106M142.012.0012.21011.735M162.014.0014.21013.835M182.515.5015.74415.294M202.517.5017.74417.294M222.519.5019.74419.294M243.021.0021.2522.752M273.024.0024.25223.

4、752M303.526.5026.77126.211公 制 细 螺 纹规格标准径2级牙钻孔径最大最小M1.00.20.800.8210.783M1.10.20.900.9210.883M1.20.21.001.0210.983M1.40.21.201.2210.183M1.60.21.401.4211.383M1.70.21.451.5001.460M1.80.21.601.6211.583M2.00.251.751.7851.729M2.20.251.951.9851.929M2.30.252.052.0612.001M2.50.352.202.2212.121M2.60.352.202.2

5、462.186M3.00.352.702.7212.621M3.50.353.203.2213.121M4.00.53.503.5993.459M4.50.54.004.0993.959M50.54.504.5994.459M5.50.55.005.0994.959M6.00.755.305.3785.188M6.00.55.505.5505.400M7.00.756.306.37861.88M7.00.56.506.55064.00M8.01.07.007.1536.917M8.00.757.307.3787.188M80.57.507.5207.400M91.08.008.1537.917

6、M90.758.308.3788.188M101.258.808.9128.647M101.09.009.1538.917M100.759.309.3789.188M100.59.509.5209.400M111.010.0010.1539.917M110.7510.3010.37810.188M111.510.5010.67610.376M121.2510.8010.91210.647公 制 细 螺 纹规格标准径2级牙钻孔径最大最小M121.011.0011.15310.917M120.511.5011.52011.4M141.512.5012.67612.376M141.013.0013.

7、15312.917M151.513.5013.67613.376M151.014.0014.15313.917M161.514.5014.67614.376M161.015.0015.15314.917M171.515.5015.67615.376M171.016.0016.15315.917M182.016.0016.21015.835M181.516.5016.67016.376M181.017.0017.15316.917M202.018.0018.21017.835M201.518.5018.67618.376M201.019.0019.15318.917M202.020.0020.2

8、1019.835M221.520.5020.67620.376M221.021.0021.15320.917M242.022.0022.21021.835M241.522.5022.67622.376M241.023.0023.15322.917M252.023.0023.21022.835M251.523.5023.67623.376M251.024.0024.15323.917M261.524.5024.67624.376M272.025.0025.21024.835M271.525.5025.67625.376M271.026.0026.15325.917M282.026.0026.21

9、025.835M281.526.5026.67626.376M281.027.0027.15326.917M303.027.0027.25226.752M302.028.0028.21027.835M301.528.5028.67628.376M301.029.0029.15328.917M322.030.0030.21029.835M321.530.5030.67630.376M333.030.0030.25229.752M332.031.0031.21030.835M331.531.5031.37631.376M351.533.5033.67633.376M363.033.0033.252

10、32.752M362.034.0034.21033.835M361.534.5034.67634.376美 制 细 螺 纹规格(UNF)标准径2级牙钻孔径最大最小番数牙外径NO.0-80(1.524)1.251.3051.182NO.1-72(1.854)1.551.6121.474NO.2-64(2.184)1.851.9121.756NO.3-56(2.515)2.102.1972.025NO.4-48(2.845)2.402.4582.271NO.5-44(3.175)2.702.7402.551NO.6-40(3.505)2.903.0222.820NO.8-36(4.166)3.50

11、3.6063.404NO.10-32(4.826)4.104.1653.963NO.12-28(5.846)4.604.7244.4961/4 -285.505.5885.3605/16 -246.907.0356.7823/8 -248.508.6368.3827/16 -209.9010.0339.7291/2 -2011.5011.60711.3299/16 -1812.9013.08112.7515/8 -1814.5014.68114.3513/4 -1617.5014.67817.3237/8 -1420.5020.67520.2701 -1223.2023.57123.1141-

12、1/8 -1226.5026.74626.2891-1/4 -1229.5029.92129.4641-3/8 -1232.8033.09632.4641-1/2 -1236.0036.27035.814无 屑 丝 攻 钻 孔 径规格精度等级RH4.5.6RH7.8RH9M1.00.250.860.88-M1.10.250.960.98-M1.20.251.061.08-M1.40.31.241.25-M1.60.351.411.43-M1.70.351.511.53-M1.80.351.611.63-M2.00.41.781.80-M2.20.451.951.98-M2.30.42.082.10