时间:2010-
03-0216:18来源:未知 作者:admin点击: 143次
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依抿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.
公 制 粗 螺 纹规格标准径2级牙钻孔径最大最小公 制 细 螺 纹规格标准径2级牙钻孔径最大最小M1.0*0.25M1.1*0.25M1.2*0.25M1.4*0.30M1.6*0.35M1.7*0.35M1.8*0.35M2.0*0.40M2.2*0.45M2.3*0.40M2.5*0.45M2.6*0.450.750.850.9511.251.351.451.61.751.92.12.20.7850.8850.9851.1421.3211.4211.5211.6791.8381.9792.1382.2380.7290.8290.9291.0751.2211.3211.4211.5671.7131.8672.0132.113M12*1.0M12*0.5M14*1.5M14*1.0M15*1.5M15*1.0M16.1.5M16*1.0M17*1.5M17*1.0M18*2.0M18*1.51111.512.51313.51414.51515.5161616.511.15311.5212.67613.15313.67614.15314.67615.15315.67616.15316.2116.67610.91711.412.37612.91713.37613.91714.37614.91715.37615.91715.83516.976M3.0*0.50M3.0*0.60M3.5*0.60M4.0*0.70M4.0*0.75M4.5*0.75M5.0*0.80M5.0*0.90M6.0*1.00M7.0*1.00M8.0*1.25M9.0*1.25M10*1.50M11*1.50M12*1.75M14*2.00M16*2.00M18*2.50M20*2.50M22*2.50M24*3.00M27*3.00M30*3.502.52.42.93.33.253.84.24.1566.87.88.59.510.3121415.517.519.5212426.52.5992.443.013.4223.3263.8784.3344.175.1536.1536.9127.9128.6769.67610.44112.2114.2115.74417.74419.74421.25224.25226.7712.4592.282.853.2423.1063.6884.1343.934.9175.9176.6477.6478.3769.37610.1611.83513.83515.29417.29419.29420.75223.75226.211M18*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*1.0M33*2.0M33*1.5M35*1.5M36*3.0M36*2.0M36*1.5171818.5192020.5212222.5232323.52424.52525.5262626.527272828.5293030.5303131.533.5333434.517.15318.2118.67619.15320.2120.67621.15322.2122.67623.15323.2123.67624.15324.67625.2125.67626.15326.2126.67627.15327.15228.2128.67629.15330.2130.67630.25231.2131.67633.67633.25234.2134.67616.91717.83518.37618.91719.83520.37620.91721.83522.37622.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626.91726.75227.83528.37628.91729.83530.37629.75230.83531.37633.37632.75233.83534.376公 制 细 螺 纹规格标准率2级牙钻孔径最大最小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*0.250.80.911.21.41.451.61.751.952.050.8210.9211.0211.2211.4211.51.6211.7851.9852.610.7830.8830.9831.1831.3831.461.5831.7291.9292.001美 制 细 螺 纹2级牙钻孔径规格(UNF)标准径M2.5*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*1.50M12*1.25规格(UNF)标准径最大最小2.22.22.73.23.544.555.35.56.36.577.37.588.38.899.39.51010.310.510.82.2212.2462.7213.2213.5994.0994.5995.0995.3785.556.3786.557.1537.3787.528.1538.3788.9129.1539.3789.5210.15310.37810.67610.9122.1212.1862.6213.1213.4593.9594.4594.9595.1885.46.1886.46.9177.1887.47.9178.1888.6478.9179.1889.48.91710.18810.37610.647No 0-80(1.524)No 1-72(1.854)No 2-64(2.184)No 3-58(2.515)No 4-48(2.845)No 5-44(3.175)No 6-40(3.506)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 - 209/16 - 185/8 - 183/4 - 167/8 - 141 - 121-1/8 - 121-1/4 - 121-3/8 - 121-1/2 - 121.251.551.852.12.42.72.93.54.14.65.56.98.59.911.512.914.517.520.523.226.529.532.8361.3051.6121.9122.1972.4582.743.0223.6064.1654.7245.5887.0358.63610.03311.60713.08114.68117.67820.57523.57126.74629.92133.09636.2711.1821.4741.7562.0252.2712.5512.823.4043.9634.4965.366.7828.3829.72911.32912.75114.35117.32320.2723.11426.28929.46432.63935.814公制迫牙丝攻钻孔径规格精 度 等 级G4-G6G7-G8G9美制迫牙丝攻钻孔径规格No 2 -56UNCNo 3 - 48精 度 等 级G4-G6G7-G81.94-2.23-G9--M1.0*0.25M1.1*0.250.860.960.88-0.98-M1.2*0.25M1.4*0.30M1.6*0.35M1.7*0.35M1.8*0.35M2.0*0.40M2.2*0.45M2.3*0.40M2.5*0.45M2.6*0.45M3.0*0.50M3.5*0.60M4.0*0.70M5.0*0.80M6.0*1.00M7.0*1.00M8.0*1.25M10*1.50M10*1.25M12*1.75M12*1.251.061.241.411.511.611.781.952.082.252.352.733.173.624.565.456.457.319.189.3111.0411.311.08-1.25-1.43-1.53-1.63-1.8-1.98-2.1-2.28-2.38-2.75-3.2-3.654.65.56.57.389.259.3811.1211.383.694.645.556.557.449.329.4411.2111.44No 4 - 40No 5 - 40No 6 - 32No 8 - 32No10 - 24No12 - 241/4 - 205/16 -183/8 - 167/16 -141/2 - 13No 2 -64UNFNo 3 - 56No 4 - 48No 5 - 44No 6 - 40No 8 - 36No 10- 32No 12 -281/4 -285/16 -243/8 - -247/16 - -201/2 - -20-----2.5-2.83-3.07-3.734.244.9---3.77-4.3-4.96-5.72-7.24-8.7410.211.278.8110.311.82------4.43-5.04-5.9-7.41-9-10.4812.0710.5412.131.97-2.27-2.56-2.66-3.16-3.78-4.394.995.857.36注:迫牙丝攻之钻孔径,在上表所列之数值,由于被加工材料之材质,硬度,形状,尺寸等之影响,多少会有所变动,因此于参考上表之同时,亦精增减若干。美 制 粗 螺 纹2级牙钻孔径规格(UNC)标准径最大最小英 制 管 螺 纹规格PS 1/16 -28标准径6.5钻孔径最大6.632最小6.49No 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 - 20 5/16 - 18 3/8 - 16 7/16 - 14 1/2 - 13 9/16 - 12 5/8 - 11 3/4 - 10 7/8 - 9 1 - 8 1-1/8- 7 1-1/4- 71.551.5821.425PS 1/8 - 28PS 1/4 - 19PS 3/8 - 19PS 1/2 - 14PS 3/4 - 14PS 1 -11PS 1-1/4 -11PS 1-1/2 -11PS 2 -118.58.6378.4951.81.8711.69511.411.54911.3412.12.1461.9411515.05414.8462.32.3852.15718.518.77318.4892.62.6972.4872424.25923.9752.82.8952.64230.230.47130.1113.43.533.30238.839.13238.7723.93.9623.68344.845.02544.6654.55.16.689.410.812.213.616.519.54.5975.2576.7318.1539.5511.02312.44612.86818.8419.7614.3444.9796.4017.7989.14410.59211.98913.38616.30719.17756.556.83656.476英 制 管 螺 纹钻孔径规格NPT使用绞刀不使用绞时刀时1/16 - 271/8 - 271/4 -183/8 -181/2 -143/4 -141 -11-6.18.3310.7214.276.258.4311.1314.27NPS6.358.7411.1314.6822.22528.222.60625.34928.52421.97124.63827.81317.4822.6328.5817.8623.0128.9818.2623.4229.36 1-3/8- 6 1-1/2- 6 1-3/4- 52 - 4-1/230.83439.545.231.11534.2939.82745.59330.35333.52838.96444.6791-1/4-11-1/21-1/2-11-1/22 -11-37.3143.6655.5837.6944.0455.9638.144.4556.36美 制 特 细 螺 纹规格(UNC)标准径2级牙钻孔径最大最小No 12 -321/4 - 325/16 -323/8 - 327/16 -281/2 - 289/16 -245/8 - 243/4 - 207/8 - 201 - 204.75.64.8265.694.6235.4867.17.2647.0878.78.8658.66110.210.33810.13511.811.93811.70913.213.38613.13214.814.98614.73217.817.95817.6782121.13320.8532424.30824.028
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