螺纹底孔尺寸对照表(9篇)
篇一：螺纹底孔尺寸对照表
螺纹底孔对照表(更新版)普通牙螺纹孔公称尺寸M2*0.4M2.5*0.45M3*0.5M4*0.7M5*0.8M6*1M8*1.25M10*1.5M12*1.75M14*2M16*2M18*2.5M20*2.5M24*3M27*3M30*3.5M33*3.5M36*4M42*4.5M48*5M52*5M56*5.5M64*6底孔1.0牙距(D)公称尺寸1.622.53.34.256.88.510.2121415.517.5212426.529.53237.5434750.558平行管内螺纹Rp1/16Rp1/2Rp1/4Rp3/4Rp1/8Rp3/86.52411.414.98.514.9R------英制一般密封管螺纹Rc-----英制密封圆锥内螺纹Rp-----英制密封圆柱内螺纹G------英制非密封管螺纹M8M10M12M14M16M18M20M22M24M27M30普通细牙螺纹孔底孔1.5牙距(D)公称尺寸79111315171921232629M12M14M16M18M20M22M24M27M30M33M36M42M48底孔(D)10.512.514.516.518.520.522.525.528.531.534.540.546.5底孔公称尺寸(D)M20M22M24M27M30M33M36M42M48M52182022252831344046502.0牙距中国（旧）ZG1/8″ZG1/4″ZG3/8″ZG1/2″ZG3/4″ZG1″ZG11/4″ZG11/2″ZG2″ZG21/2″ZG3″圆锥管螺纹孔（55°）公称尺寸中国（新）Rc1/8″Rc1/4″Rc3/8″Rc1/2″Rc3/4″Rc1″Rc11/4″Rc11/2″Rc2″Rc21/2″Rc3″日本PT1/8″PT1/4″PT3/8″PT1/2″PT3/4″PT1″PT11/4″PT11/2″PT2″PT21/2″PT3″底孔(D)8.41114.51823.529.53844567284圆柱管螺纹孔（55°）公称尺寸G1/8″G1/4″G3/8″G1/2″G3/4″G1″G11/8″G11/4″G11/2″G13/4″G2″G21/4″G21/2″G23/4″G3″底孔(D)8.611.715.218.824.330.535.239.245.15156.962.9572.4578.885.2布锥管螺纹孔（60°）公称尺寸中国（旧）Z1/8″Z1/4″Z3/8″Z1/2″Z3/4″Z1″Z11/4″Z11/2″Z2″中国（新）NPT1/8″NPT1/4″NPT3/8″NPT1/2″NPT3/4″NPT1″NPT11/4″NPT11/2″NPT2″底孔(D)8.411.114.618.123.529.438.244.356.3
篇二：螺纹底孔尺寸对照表
螺纹底孔尺寸对照表序号12345678910111213141516171819202122232425262728293031323334353637螺纹种类及螺距M3x0.5M4x0.7M5x0.8M6x1M8x1.25M10x1.5M12x1.75M14x2M16x2M18x2.5M20x2.5M24x3M30x3.5M36x4M42x4.5M48x55/8-11UNC3/4-10UNC锥度管螺纹RC（PF)RC1/8(PT)RC1/4(PT)RC3/8(PT)RC1/2(PT)RC3/4(PT)RC1(PT)RC1+1/4(PT)RC1+1/2(PT)RC2(PT)RC2+1/2(PT)平行管螺纹G(PF)G1/8(PF)G1/4(PF)G3/8(PF)G1/2(PF)G5/8(PF)G3/4(PF)G1(PF)Φ8.6Φ11.5Φ8.8Φ11.87Φ15.38Φ19.1Φ21Φ24.6Φ30.9Φ8.2Φ10.9Φ14.4Φ18Φ23.5Φ29.5Φ38Φ44Φ55Φ71Φ8.5Φ11.1Φ14.6Φ18.5Φ23.8Φ29.9Φ38.5Φ44.6Φ55.6Φ71.6螺纹孔底直最大孔底直径径Φ2.5Φ2.59Φ3.3Φ4.2Φ5Φ6.8Φ8.5Φ10.2Φ12Φ14Φ15.5Φ17.5Φ21Φ26.5Φ32Φ37.5Φ43Φ13.6Φ16.6Φ3.42Φ4.33Φ5.2Φ6.9Φ8.6Φ10.4Φ12.1Φ14.2Φ15.7Φ17.7Φ21.2Φ26.7Φ32.2Φ37.743.2Φ13.8Φ16.8
篇三：螺纹底孔尺寸对照表
螺
纹
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*0.5M3.0*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0.750.850.951.101.251.351.451.601.751.902.102.202.502.402.903.303.253.804.204.105.006.006.807.808.509.5010.3012.0014.0015.5017.5019.5021.0024.0026.502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0.7290.8290.9291.0751.2211.3211.4211.5671.7131.8672.0132.1132.4592.2802.8503.2423.1063.6884.1343.9304.9175.9176.6477.6478.3769.37610.10611.83513.83515.29417.29419.29420.75223.75226.211M12*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*1.5公
制
细
螺
纹规格标准径11.0011.5012.5013.0013.5014.0014.5015.0015.5016.0016.0016.5017.0018.0018.5019.0020.0020.5021.0022.0022.5023.0023.0023.5024.0024.5025.0025.5026.0026.0026.5027.0027.0028.0028.5029.0030.0030.5030.0031.0031.5033.5033.0034.0034.502级牙钻孔径最大11.15311.52012.67613.15313.67614.15314.67615.15315.67616.15316.21016.67617.15318.21018.67619.15320.21020.67621.15322.21022.67623.15323.21023.67624.15324.67625.21025.67626.15326.21026.67627.15327.25228.21028.67629.15330.21030.67630.25231.21031.67633.67633.25234.21034.676最小10.91711.40012.37612.91713.37613.91714.37614.91715.37615.91715.83516.37616.91717.83518.37618.91719.83520.37620.91721.83522.37622.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626.91726.75227.83528.37628.91729.83530.37629.75230.83531.37633.37632.75233.83534.376公
制
迫
牙
丝
攻
钻
孔
径规格M1.0*0.25M1.1*0.25M1.2*0.25M1.4*0.3M1.6*0.35M1.7*0.35M1.8*0.35M2*0.4M2.2*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*1.25精度等级G4-G6G7-G8G90.860.880.960.981.061.081.241.251.411.431.511.531.611.631.781.801.951.982.082.102.252.282.352.382.732.753.173.203.623.653.694.564.604.645.455.505.556.456.506.557.317.387.449.189.259.329.319.389.4411.0411.1211.2111.3111.3811.44英制平行管用螺紋PF(G)(單位：mm)规格G1/16G(PF)1/81/43/81/25/83/47/811.1251.251.3751.51.6251.752大径7.729.7313.1616.6620.9622.9126.4430.2033.2537.9041.9144.3247.8051.9153.7559.61最大6.848.8511.8915.4019.1721.1324.6628.4230.9335.5839.5942.0149.0250.7956.66钻孔径最小6.568.5711.4514.9518.6320.5924.1227.8830.2934.9438.9541.3745.4949.6751.4357.30英
制
管
螺
纹规格PS1/16-28PS1/8-28PS1/4-19PS3/8-19PS1/2-14PS3/4-14PS1-11PS1-1/4-11PS1-1/2-11PS2-11标准径6.508.5011.4015.0018.5024.0030.2038.8044.8056.50最大6.6328.63711.54915.05418.77324.25930.47139.13245.02556.836钻孔径最小6.4908.49511.34114.84618.48923.97530.11138.77244.66556.476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，亦请增减若干。美
制
粗
螺
纹规格(UNC)
(螺丝牙外径)标准径2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最小1.4251.6951.9412.1572.4872.6423.3023.6834.3444.9796.4017.7989.14410.59211.98913.38616.30719.17721.97124.63827.81330.35333.52838.96444.679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0.800.901.001.201.401.451.601.751.952.052.202.202.703.203.504.004.505.005.305.506.306.507.007.307.508.008.308.809.009.309.5010.0010.3010.5010.802级牙钻孔径最大0.8210.9211.0211.2211.4211.5001.6211.7851.9852.0612.2212.2462.721最小0.7830.8830.9831.1831.3831.4601.5831.7291.9292.0012.1212.1862.621美
制
细
螺
纹规格(UNF)
(螺丝牙外径)标准径2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1.1821.4741.7562.0252.2712.5512.8203.4043.9634.4965.3606.7828.3829.72911.32912.75114.35117.32320.27023.11426.28929.46432.63935.8143.2213.1213.5993.4594.0993.9594.5994.4595.0994.9595.3785.1885.5505.4006.3786.1886.5506.4007.1536.9177.3787.1887.5207.4008.1537.9178.3788.1888.9128.4679.1538.9179.3789.1889.5209.40010.1539.91710.37810.18810.67610.37610.91210.647No.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)1/4-285/16-243/8-247/16-201/2-209/16-185/8-183/4-167/8-141-121-1/8-121-1/4-121-3/8-121-1/2-121.251.551.852.102.402.702.903.504.104.605.506.908.509.9011.5012.9014.5017.5020.5023.2026.5029.5032.8036.0No.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)1/4-205/16-183/8-167/16-141/2-139/16-125/8-113/4-107/8-91-81-1/8-71-1/4-71-3/8-61-1/2-61-3/4-52-4-1/21.551.802.102.302.602.803.403.904.505.106.608.009.4010.8012.2013.6016.5019.5022.2025.0028.2030.8034.00
篇四：螺纹底孔尺寸对照表
螺纹底孔对照表普通牙螺纹孔底孔1.0牙距公称尺寸(D)公称尺寸M2M2.5M3M4M5M6M8M10M12M14M16M18M20M24M27M30M33M36M42M48M52M56M641.622.53.34.256.88.510.2121415.517.5212426.529.53237.5434750.558平行管内螺纹Rp1/16Rp1/2Rp1/4Rp3/4Rp1/8Rp3/86.52411.414.98.514.9R------英制一般密封管螺纹Rc-----英制密封圆锥内螺纹Rp-----英制密封圆柱内螺纹G------英制非密封管螺纹M8M10M12M14M16M18M20M22M24M27M30普通细牙螺纹孔底孔1.5牙距(D)公称尺寸79111315171921232629M12M14M16M18M20M22M24M27M30M33M36M42M48底孔(D)10.512.514.516.518.520.522.525.528.531.534.540.546.52.0牙距M20M22M24M27M30M33M36M42M48M52圆锥管螺纹孔（55°）公称尺寸底孔公称尺寸(D)中国（旧）中国（新）18202225283134404650ZG1/8″ZG1/4″ZG3/8″ZG1/2″ZG3/4″ZG1″ZG11/4″ZG11/2″ZG2″ZG21/2″ZG3″Rc1/8″Rc1/4″Rc3/8″Rc1/2″Rc3/4″Rc1″Rc11/4″Rc11/2″Rc2″Rc21/2″Rc3″日本PT1/8″PT1/4″PT3/8″PT1/2″PT3/4″PT1″PT11/4″PT11/2″PT2″PT21/2″PT3″底孔(D)8.41114.51823.529.53844567284圆柱管螺纹孔（55°）公称尺寸G1/8″G1/4″G3/8″G1/2″G3/4″G1″G11/8″G11/4″G11/2″G13/4″G2″G21/4″G21/2″G23/4″G3″底孔(D)8.611.715.218.824.330.535.239.245.15156.962.9572.4578.885.2布锥管螺纹孔（60°）公称尺寸中国（旧）Z1/8″Z1/4″Z3/8″Z1/2″Z3/4″Z1″Z11/4″Z11/2″Z2″中国（新）NPT1/8″NPT1/4″NPT3/8″NPT1/2″NPT3/4″NPT1″NPT11/4″NPT11/2″NPT2″底孔(D)8.411.114.618.123.529.438.244.356.3
篇五：螺纹底孔尺寸对照表
螺
纹
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*0.5M3.0*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0.750.850.951.101.251.351.451.601.751.902.102.202.502.402.903.303.253.804.204.105.006.006.807.808.509.5010.3012.0014.0015.5017.5019.5021.0024.0026.502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0.7290.8290.9291.0751.2211.3211.4211.5671.7131.8672.0132.1132.4592.2802.8503.2423.1063.6884.1343.9304.9175.9176.6477.6478.3769.37610.10611.83513.83515.29417.29419.29420.75223.75226.211M12*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*1.5公
制
细
螺
纹规格标准径11.0011.5012.5013.0013.5014.0014.5015.0015.5016.0016.0016.5017.0018.0018.5019.0020.0020.5021.0022.0022.5023.0023.0023.5024.0024.5025.0025.5026.0026.0026.5027.0027.0028.0028.5029.0030.0030.5030.0031.0031.5033.5033.0034.0034.502级牙钻孔径最大11.15311.52012.67613.15313.67614.15314.67615.15315.67616.15316.21016.67617.15318.21018.67619.15320.21020.67621.15322.21022.67623.15323.21023.67624.15324.67625.21025.67626.15326.21026.67627.15327.25228.21028.67629.15330.21030.67630.25231.21031.67633.67633.25234.21034.676最小10.91711.40012.37612.91713.37613.91714.37614.91715.37615.91715.83516.37616.91717.83518.37618.91719.83520.37620.91721.83522.37622.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626.91726.75227.83528.37628.91729.83530.37629.75230.83531.37633.37632.75233.83534.376公
制
迫
牙
丝
攻
钻
孔
径规格M1.0*0.25M1.1*0.25M1.2*0.25M1.4*0.3M1.6*0.35M1.7*0.35M1.8*0.35M2*0.4M2.2*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*1.25精度等级G4-G6G7-G8G90.860.880.960.981.061.081.241.251.411.431.511.531.611.631.781.801.951.982.082.102.252.282.352.382.732.753.173.203.623.653.694.564.604.645.455.505.556.456.506.557.317.387.449.189.259.329.319.389.4411.0411.1211.2111.3111.3811.44英制平行管用螺紋PF(G)(單位：mm)规格G1/16G(PF)1/81/43/81/25/83/47/811.1251.251.3751.51.6251.752大径7.729.7313.1616.6620.9622.9126.4430.2033.2537.9041.9144.3247.8051.9153.7559.61最大6.848.8511.8915.4019.1721.1324.6628.4230.9335.5839.5942.0149.0250.7956.66钻孔径最小6.568.5711.4514.9518.6320.5924.1227.8830.2934.9438.9541.3745.4949.6751.4357.30英
制
管
螺
纹规格PS1/16-28PS1/8-28PS1/4-19PS3/8-19PS1/2-14PS3/4-14PS1-11PS1-1/4-11PS1-1/2-11PS2-11标准径6.508.5011.4015.0018.5024.0030.2038.8044.8056.50最大6.6328.63711.54915.05418.77324.25930.47139.13245.02556.836钻孔径最小6.4908.49511.34114.84618.48923.97530.11138.77244.66556.476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，亦请增减若干。美
制
粗
螺
纹规格(UNC)
(螺丝牙外径)标准径2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最小1.4251.6951.9412.1572.4872.6423.3023.6834.3444.9796.4017.7989.14410.59211.98913.38616.30719.17721.97124.63827.81330.35333.52838.96444.679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0.800.901.001.201.401.451.601.751.952.052.202.202.703.203.504.004.505.005.305.506.306.507.007.307.508.008.308.809.009.309.5010.0010.3010.5010.802级牙钻孔径最大0.8210.9211.0211.2211.4211.5001.6211.7851.9852.0612.2212.2462.721最小0.7830.8830.9831.1831.3831.4601.5831.7291.9292.0012.1212.1862.621美
制
细
螺
纹规格(UNF)
(螺丝牙外径)标准径2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1.1821.4741.7562.0252.2712.5512.8203.4043.9634.4965.3606.7828.3829.72911.32912.75114.35117.32320.27023.11426.28929.46432.63935.8143.2213.1213.5993.4594.0993.9594.5994.4595.0994.9595.3785.1885.5505.4006.3786.1886.5506.4007.1536.9177.3787.1887.5207.4008.1537.9178.3788.1888.9128.4679.1538.9179.3789.1889.5209.40010.1539.91710.37810.18810.67610.37610.91210.647No.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)1/4-285/16-243/8-247/16-201/2-209/16-185/8-183/4-167/8-141-121-1/8-121-1/4-121-3/8-121-1/2-121.251.551.852.102.402.702.903.504.104.605.506.908.509.9011.5012.9014.5017.5020.5023.2026.5029.5032.8036.0No.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)1/4-205/16-183/8-167/16-141/2-139/16-125/8-113/4-107/8-91-81-1/8-71-1/4-71-3/8-61-1/2-61-3/4-52-4-1/21.551.802.102.302.602.803.403.904.505.106.608.009.4010.8012.2013.6016.5019.5022.2025.0028.2030.8034.0039.5045.20英
制
篇六：螺纹底孔尺寸对照表
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螺纹加工底孔直径对照表
本文件包含内容
公制粗螺纹2级牙底孔径对照表
公制细螺纹2级牙底孔径对照表
美制粗螺纹2级牙底孔径对照表
美制细螺纹2级牙底孔径对照表
公制迫牙丝攻钻孔径对照表
美制迫牙丝攻钻孔径对照表
美制特细螺纹2级牙底孔径对照表
英制电器螺纹底孔径对照表
英制管螺纹(PS〕底孔径对照表
英制管螺纹(PT〕底孔径对照表
美制管螺纹(NPT、NPS〕底孔径对照表
英制螺纹(UNEF〕底孔径对照表
公制螺纹〔滚造径〕底孔径对照表
针车用其所长螺纹〔滚造径〕底孔径对照表
英制圆柱管螺纹(55度〕加工一览表
英制锥管螺纹(55度〕加工一览表
布锥管螺纹加工一览表
美制UNC、UNF螺纹参数表
惠氏BSW、BSF螺纹参数表
公制螺纹特殊材质工件加工底孔径对照表
非密封管螺纹底孔径对照表
英制锥管螺纹和英制锥螺纹攻丝前钻底孔的钻头直径
日标英制锥度管螺纹底孔径对照表
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英制平行管螺纹底孔径对照表
美制管用螺纹〔使用/不使用铰刀〕底孔径对照表
圆锥管螺纹〔新旧国标、日标〕底孔径对照表
圆柱管螺纹〔新旧国标、日标〕底孔径对照表
布锥管螺纹〔新旧国标、日标〕底孔径对照表
公制粗牙〔铜、铁、不锈钢、铝质工件〕底孔径对照表
公制细牙〔铜、铁、不锈钢、铝质工件〕底孔径对照表
60度圆锥管螺纹〔钻/镗孔〕底孔径对照表
60度圆柱管螺纹〔钻/镗孔〕底孔径对照表
公制粗螺纹
规格
M1.0×0.25M1.1×0.25M1.2×0.25M1.4×0.3M1.6×0.35M1.7×0.35M1.8×0.35M2.0×0.4M2.2×0.45M2.3×0.4M2.5×0.45M2.6×0.45标准径
0.750.850.951.101.251.351.451.601.751.902.102.202级牙钻孔径
最大
0.7850.8850.9851.1421.3211.4211.5211.6791.8381.9792.1382.238最小
0.7290.8290.9851.0751.2211.3211.4211.5671.7131.8672.0132.113..word..
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M3.0×0.5M3.0×0.6M3.5×0.6M4.0×0.7M4.0×0.75M4.5×0.75M5.0×0.8M5.0×0.9M6.0×1.0M7.0×1.0M8.0×1.25M9.0×1.25M10×1.5M11×1.5M12×1.75M14×2.0M16×2.0M18×2.5M20×2.5M22×2.5M24×3.0M27×3.0M30×3.5公制细螺纹
2.502.402.903.303.253.804.204.105.006.006.807.808.509.5010.3012.0014.0015.5017.5019.5021.0024.0026.52.5992.4403.0103.4223.3263.8784.3344.1705.1536.1536.9127.9128.6769.67610.44112.21014.21015.74417.74419.74421.25224.25226.7712.4592.2802.8503.2423.1063.6884.1343.9304.9175.9176.6477.6478.3769.37610.10611.83513.83515.29417.29419.29420.75223.75226.211..word..
..
规格
M1.0×0.2M1.1×0.2M1.2×0.2M1.4×0.2M1.6×0.2M1.7×0.2M1.8×0.2M2.0×0.25M2.2×0.25M2.3×0.25M2.5×0.35M2.6×0.35M3.0×0.35M3.5×0.35M4.0×0.5M4.5×0.5M5.0×0.5M5.5×0.5M6.0×0.75M6.0×0.5M7.0×0.75M7.0×0.5M8.0×1.0M8.0×0.75标准径
0.800.901.001.201.401.451.601.751.952.052.202.202.703.203.504.004.505.005.305.506.306.507.007.302级牙钻孔径
最大
0.8210.9211.0211.2211.4211.5001.6211.7851.9852.0612.2212.2462.7213.2213.5994.0994.5995.0995.3785.5506.3786.5507.1537.378最小
0.7830.8830.9831.1831.3831.4601.5831.7291.9292.0012.1212.1862.6213.1213.4593.9594.4594.9595.1885.4006.1886.4006.9177.188..word..
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M8.0×0.5M9.0×1.0M9.0×0.75M10×1.25M10×1.0M10×0.75M10×0.5M11×1.0M11×0.75M12×1.5M12×1.25M12×1.0M12×0.5M14×1.5M14×1.0M15×1.5M15×1.0M16×1.5M16×1.0M17×1.5M17×1.0M18×2.0M18×1.5M18×1.0M20×2.0M20×1.57.508.008.308.809.009.309.5010.0010.3010.5010.8011.0011.5012.5013.0013.5014.0014.5015.0015.5016.0016.0016.5017.0018.0018.507.5208.1538.3788.9129.1539.3789.52010.15310.37810.67610.91211.15311.52012.67613.15313.67614.15314.67615.15315.67616.15316.21016.67617.15318.21018.6767.4007.9178.1888.6478.9179.1889.4009.91710.18810.37610.64710.91711.40012.37612.91713.37613.91714.37614.91715.37615.91715.83516.37616.91717.83518.376..word..
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M20×1.0M22×2.0M22×1.5M22×1.0M24×2.0M24×1.5M24×1.0M25×2.0M25×1.5M25×1.0M26×1.5M27×2.0M27×1.5M27×1.0M28×2.0M28×1.5M28×1.0M30×3.0M30×2.0M30×1.5M30×1.0M32×2.0M32×1.5M33×3.0M33×2.0M33×1.519.0020.0020.5021.0022.0022.5023.0023.0023.5024.0024.5025.0025.5026.0026.0026.5027.0027.0028.0028.5029.0030.0030.5030.0031.0031.5019.15320.21020.67621.15322.21022.67623.15323.21023.67624.15324.67625.21025.67626.15326.21026.67627.15327.25228.21028.67629.15330.21030.67630.25231.21031.67618.91719.83520.37620.91721.83522.37622.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626.91726.75227.83528.37628.91729.83530.37629.75230.83531.376..word..
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M35×1.5M36×3.0M36×2.0M36×1.5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)1/4-205/16-183/8-167/16-141/2-139/16-125/8-113/4-1033.5033.0034.0034.533.67633.25234.21034.67633.37632.75233.83534.376标准径
1.551.802.102.302.602.803.403.904.505.106.608.009.4010.8012.2013.6016.502级牙钻孔径
最大
1.5821.8712.1462.3852.6972.8953.533.9624.5975.2576.7318.1539.5511.02312.44613.86816.840最小
1.4251.6951.9412.1572.4872.6423.3023.6834.3444.9796.4017.7989.14410.59211.98913.38616.307..word..
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7/8-911-1/8-71-1/4-71-3/8-61-1/2-61-3/4-52-4-1/2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)1/4-285/16-243/8-2419.5022.2025.0028.2030.8034.0039.5045.219.76122.60625.34928.52431.11534.29039.82745.59319.17721.97124.63827.81330.35333.52838.96444.67标准径
1.251.551.852.102.402.702.903.504.104.605.506.908.502级牙钻孔径
最大
1.3051.6121.9122.1972.4582.7403.0223.6064.1654.7245.5887.0358.636最小
1.1821.4741.7562.0252.2712.5512.8203.4043.9634.4965.3606.7828.382..word..
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7/16-201/2-209/16-185/8-183/4-167/8-141-121-1/8-121-1/4-121-3/8-121-1/2-12公制迫牙丝攻钻孔径
规格
M1.0×0.25M1.1×0.25M1.2×0.25M1.4×0.3M1.6×0.35M1.7×0.35M1.8×0.35M2.0×0.4M2.2×0.45M2.3×0.49.9011.5012.9014.5017.5020.5023.2026.5029.5032.8036.010.03311.60713.08114.68117.67820.67523.57126.74629.92133.09636.2719.72911.32912.75114.35117.32320.27023.11426.28929.46432.63935.814精度等级
G4-G60.860.961.061.241.411.511.611.781.952.08G7-G80.880.981.081.251.431.531.631.801.982.10G9..word..
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M2.5×0.45M2.6×0.45M3.0×0.5M3.5×0.6M4.0×0.7M5.0×0.8M6.0×1.0M7.0×1.0M8.0×1.25M10×1.5M10×1.25M12×1.75M12×1.25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.12-242.252.352.733.173.624.565.456.457.319.189.3111.0411.312.282.382.753.203.654.605.506.507.389.259.3811.1211.33.694.645.556.557.449.329.4411.2111.44精度等级
G4-G61.942.232.502.833.073.734.244.90G7-G81.972.272.562.863.163.784.394.995.857.3610.5412.13标准径
4.705.607.102级牙钻孔径
最大
4.8265.6907.264最小
4.6235.4867.087..word..
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3/8-327/16-281/2-289/16-245/8-243/4-207/8-201-2英制电器螺纹
规格
英制管螺纹
规格
英制管螺纹
规格
美制管螺纹
标准径
使用纹刀不用纹刀时
时
标准径
8.7010.2011.8013.2014.8017.8021.0024.08.86510.33811.93813.38614.98617.95821.13324.308.66110.13511.70913.13214.73217.67820.85324.02钻孔径
钻孔径
最大
最小
有交牙部之长度〔最小〕中之毋标准长度〔最小〕中之毋螺牙内径
螺牙内径
钻孔径
规格
NPT使用绞刀时
1/16-276.10不用绞刀时
6.25NPS6.35..word..
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1/8-271/4-183/8-181/2-143/4-141-11-1/21-1/4-11-1/21-1/2-11-1/22-11-1/2英制螺纹
规格(UNEF)W1/8-40W5/32-32W3/16-24W1/4-20W5/16-18W3/8-16W7/16-14W1/2-12W9/16-12W5/8-11W3/4-10W7/8-98.3310.7214.2717.4822.6328.5837.3143.6655.58.4311.1314.2717.8623.0128.9837.6944.0455.968.7411.1314.6818.2623.4229.3638.1044.4556.36钻孔径
硬材
2.653.253.755.106.608.009.4010.7012.3013.7016.7019.50软材
2.603.203.705.006.507.909.3010.5012.0013.5016.5019.30..word..
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W1-8W1-1/8-7W1-1/4-公制螺纹
规格
针车用螺纹
规格
滚造径
滚造径
22.4025.0028.322.0024.8028.0G英制圆柱管螺纹〔55°〕加工一览表
小径：d1=d-1.2807t公称直径
1/81/43/81/25/83/47/8111/811/413/811/2牙/寸
281919141414141111111111螺距〔t〕
0.9071.3371.3371.8141.8141.8141.8142.3092.3092.3092.3092.30底孔
8.5011.5015.0018.5020.5024.0028.0030.5035.0039.0041.5045.0深度
14.020.020.027.527.527.527.535.035.035.035.035.螺纹大径
9.729013.158016.663020.956022.912026.442030.202133.250037.898041.912044.325047.8050..word..
..
13/4221/421/223/411111111112.3092.3092.3092.3092.3051.0057.0063.0072.5079.035.035.035.035.035.53.748059.616065.712075.187081.537ZG
英制锥管螺纹〔55°〕加工一览表
小径：d1=d-1.2807t公称直径
1/81/43/81/23/4111/411/2221/2注意：底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时孔深度尺寸。
〔规定为15倍螺距〕
Z
圆锥管螺纹〔布锥管螺纹〕
〔60°〕
牙/寸
28191914141111111111螺距
0.9071.3371.3371.8141.8142.3092.3092.3092.3092.30底孔
8.57-8.2711.5-11.115.0-14.618.6-18.224.1-23.530.3-29.639.0-38.144.8-44.056.7-55.772.2-71.1深度
14.020.020.027.027.035.035.035.035.035.螺纹大径
9.729013.158016.663020.956026.442033.250041.912047.805059.616075.817..word..
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小径：d1=d-1.6t公称直径
1/161/81/43/81/23/4111/411/22美制螺纹〔UNC、UNF〕参数表〔60°〕
小径：d1=d-1.082532t尺寸代公称直径公称直径每英寸粗牙数/粗牙底孔-每英寸细牙数/细牙底孔-号
1/45/163/87/161/29/16in0.25000.31250.37500.43750.50000.5625mm6.357.949.5311.1112.7014.29螺纹
20/1.2718/1.4116/1.5914/1.8113/1.9512/2.12深度
￠5.0-19￠6.5-21￠7.8-24￠9.2-27螺距
28/0.9124/1.0624/1.0620/1.27深度
￠5.5-14￠7.0-16￠8.5-16￠10.0-19￠11.5-19￠13.0-21牙/寸
272718181414111/2111/2111/2111/2螺距〔t〕
0.9410.9411.4111.4111.8141.8142.2092.2092.2092.20底孔
6.4-6.18.8-8.511.3-1114.8-14.418.3-17.823.7-23.129.7-29.138.5-37.844.5-43.956.6-55.深度
15.015.021.021.027.027.033.033.033.033.螺纹大径
7.895010.272013.572017.055021.223026.598033.228041.985048.054060.092￠10.6-2920/1.27￠12.0-3218/1.41..word..
..
5/83/47/8111/811/413/811/213/420.62500.75000.87501.00001.12501.25001.37501.50001.75002.00015.8819.0522.2325.4028.5831.7534.9338.1044.4550.811/2.3110/2.549/2.828/3.187/3.637/3.636/4.236/4.235/5.084.5/5.64￠13.5-3518/1.41￠16.5-3816/1.59￠19.2-4214/1.81￠22.0-4812/2.12￠25.0-5512/2.12￠28.0-5512/2.12￠30.5-6412/2.12￠38.0-6412/2.12￠39.0-76￠45.0-85￠14.5-21￠17.5-24￠20.5-27￠23.5-32￠26.5-32￠29.5-32￠33.0-32￠36.0-32注意：in为英寸符号，一英寸等于25.4毫米。
底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时孔深度尺寸。
〔规定为15倍螺距〕
惠氏螺纹〔BSW、BSF〕参数表〔55°〕
小径：d1=d-1.280655t
公称直径公称直径in1/83/167/321/49/32mm3.184.765.566.357.14每英寸粗牙数/螺粗牙底孔-深每英寸细牙数/螺细牙底孔-深距
40/0.63524/1.0520/1.27度
￠2.4-10￠3.4-16￠4.8-1距
32/0.79428/0.90726/0.97726/0.977度
￠3.8-12￠4.4-14￠5.1-15￠6.0-15..word..
..
5/163/87/161/29/165/811/163/47/8111/811/413/811/215/813/4221/421/27.949.5311.1112.7014.2915.8817.4619.0522.2325.4028.5831.7534.9338.1041.2844.4550.8057.1563.518/1.41116/1.58814/1.81412/2.11712/2.11711/2.30911/2.30910/2.5409/2.8228/3.1757/3.6297/3.626/4.2335/5.0804.5/5.6444/6.3504/6.35￠6.2-21￠7.5-24￠8.8-27￠10.0-32￠11.6-32￠13.0-35￠14.5-35￠15.8-38￠18.6-42￠21.4-48￠24.0-54￠27.2-54￠32.8-63￠38.0-76￠43.6-85￠49.0-95￠55.4-9522/1.15520/1.27018/1.41116/1.58816/1.58814/1.81414/1.81412/2.11711/2.30910/2.5409/2.8229/2.8228/3.1758/3.1758/3.1757/3.6297/3.6296/4.2336/4.233￠6.5-17￠8.0-19￠9.4-22￠10.8-24￠12.4-24￠13.6-27￠15.2-27￠16.4-32￠19.4-35￠22.2-38￠25.0-42￠28.2-42￠31.0-48￠34.2-48￠37.4-48￠40.0-54￠46.2-54￠51.8-63￠58.2-63注意：in为英寸符号，一英寸等于25.4毫米。
底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时光孔深度尺寸。
〔规定为15倍螺距〕
..word..
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惠氏螺纹为紧固件螺纹。公称直径为螺纹大径。
普通螺纹攻螺纹前底孔的钻头直径
非密封管螺纹攻螺纹前钻底孔的钻头直径
螺纹公称直径〔"〕
每25.4mm内牙数
钻头直径〔mm〕
英制锥管螺纹和英制锥螺纹攻丝前钻底孔的钻头直径
英制锥管螺纹
公称直径
〔"〕
1/8每25.4mm
内牙数
28钻头直径
〔mm〕
8.4英制锥螺纹
公称直径
〔"〕
1/8每25.4mm
内牙数
27钻头直径
〔mm〕
8.61/81/42813/811/2143/41411111/413/811/2111141.31145.18.811.715.218.924.430.639.2..word..
..
1/43/81/23/4111/411/221919141411111111螺纹底孔明细
11.214.718.323.629.738.344.155.1/43/81/23/4111/411/2218181414111/2111/2111/2111/211.114.517.923.229.237.943.956公
制
螺纹规格
M3M4M5M6M8M10M12M14M16M18M20M22螺距
0.50.70.811.251.51.75222.52.52.5钻孔直径
φ2.5φ3.3φ4.2φ5φ6.7φ8.5φ10.3φ12φ14φ15.5φ17.5φ19.5钻孔深度
8814151820202525螺纹深度
5511121517172222..word..
..
M24M27M30M33M36M10×1M12×1.5M14×1.5M16×1.5M18×1.5M20×1.5M22×1.5M27×1.5M27×2M30×1.5M33×2M36×2M42×2英
制
螺纹规格
Z1/16"ZG1/16"G1/16"Z1/8"333.53.5411.51.51.51.51.51.51.521.5222φ21φ24φ26.5φ29.5φ32φ9φ10.5φ12.5φ14.5φ16.5φ18.5φ20.5φ25.5φ25φ28.5φ31φ34φ418202020202225252531617171717122222225钻孔直径
φ6.4φ6.6φ6.6φ8.7钻孔深度
12121217螺纹深度
88812..word..
..
ZG1/8"G1/8"Z1/4"ZG1/4"G1/4"Z3/8"ZG3/8"G3/8"Z1/2"ZG1/2"G1/2"Z3/4"ZG3/4"G3/4"Z1"ZG1"G1"Z11/4"ZG11/4"G11/4"Z11/2"ZG11/2"G11/2"Z2"ZG2"G2"φ8.6φ8.6φ11.3φ11.4φ11.4φ14.8φ15φ15φ18.3φ18.6φ18.6φ23.7φ24.1φ24.1φ29.7φ30.3φ30.3φ38.5φ39φ39φ44.5φ44.8φ44.8φ56.6φ56.7φ56.71717171717202020222222222222303031212141414171717181818181818252525..word..
..
螺纹底孔直径表
英制平行管用螺纹〔G、PF〕
管用螺纹规格
G1/16‐28G(PF)1/8‐28G(PF)1/4‐19G(PF)3/8‐19G(PF)1/2‐14G(PF)5/8‐14G(PF)3/4‐14G(PF)7/8‐14G(PF)1‐11G(PF)11/8‐11G(PF)11/4‐11G(PF)11/2‐11G(PF)13/4‐11G(PF)2‐11G(PF)21/4‐11G(PF)21/2‐11G(PF)23/4‐11G(PF)3‐11G(PF)31/2‐11内螺纹最小径〔参考〕
底孔钻头直径
6.78.711.715.2192124.528.230.635.239.2455157637278.58597最大尺寸
6.8438.84811.8915.39519.17221.1324.65828.41830.93135.57939.59245.48551.42857.29663.39272.86679.21685.56698.012最小尺寸
6.5618.56611.44514.9518.63120.58924.11727.87730.29134.93938.95244.84550.78856.65662.75272.22678.57684.92697.372..word..
..
G(PF)4‐11G(PF)41/2‐11G(PF)5‐11G(PF)51/2‐11G(PF)6‐11─
─
─
─
─
110.712123.412136.112148.812161.512110.072122.772135.472148.172160.872美制标准管用螺纹〔NPT、NPS〕
锥度螺纹〔NPT〕
管用螺纹规格
底孔钻头直径
使用
铰刀
mm1/16‐271/8‐271/4‐183/8‐181/2‐143/4‐141‐111/211/4‐111/211/2‐111/22‐111/221/2‐..word..
平行螺纹(NPS〕
不使用
铰刀
mm6.158.4311.1314.2717.8623.0128.9837.6943.6655.5866.2inch0.2460.3320.4380.5620.7030.9061.1411.4841.7192.1882.60mm6.358.7411.1314.6818.2623.4229.3638.144.4556.3667.46inch0.250.3440.4380.5780.7190.9221.1561.51.752.2192.656inch0.2340.3280.4220.5620.6880.8911.1251.4691.7032.1722.575.948.3310.7214.2717.4822.6328.5837.3143.2655.1765.4..
圆锥管螺孔
攻丝前钻孔尺寸
公称尺寸
中国〔旧〕
ZG1/8″
ZG1/4″
ZG3/8″
ZG1/2″
ZG3/4″
ZG1″
ZG11/4″
ZG11/2″
ZG2″
ZG21/2″
ZG3″
圆柱管螺孔
攻丝前钻孔尺寸
公称尺寸
布锥管螺孔
攻丝前钻孔尺寸
公称尺寸
中国〔旧〕
Z1/8″
中国〔新〕
NPT1/8″
底孔d8.4底孔d中国〔新〕
Rc1/8″
Rc1/4″
Rc3/8″
Rc1/2″
Rc3/4″
Rc1″
Rc11/4″
Rc11/2″
Rc2″
Rc21/2″
Rc3″
日本
PT1/8″
PT1/4″
PT3/8″
PT1/2″
PT3/4″
PT1″
PT11/4″
PT11/2″
PT2″
PT21/2″
PT3″
底孔d8.411.014.518.023.529.538.044.056.072.084...word..
..
Z1/4″
Z3/8″
Z1/2″
Z3/4″
Z1″
Z11/4″
Z11/2″
Z2″
公制牙粗螺纹(60°)称
呼
M1x0.25M1.1x0.25M1.2x0.25M1.4x0.3M1.6x0.35M1.7x0.35M1.8x0.35M2x0.4M2.2x0.45M2.3x0.4M2.5x0.45M2.6x0.45M3x0.5标准径
0.750.850.951.11.251.351.451.61.751.92.12.22.5NPT1/4″
NPT3/8″
NPT1/2″
NPT3/4″
NPT1″
NPT11/4″
NPT11/2″
NPT2″
11.114.618.123.529.438.244.356.3铜、铁
D1-上限
0.80.911.161.341.441.541.71.8622.162.262.62D1-下限
0.760.860.961.111.291.391.491.651.811.952.112.212.57不锈钢、铝
D1-上限
0.830.931.031.191.371.471.571.731.892.032.192.292.65D1-下限
0.790.890.991.141.321.421.521.681.841.982.142.242.6..word..
..
*M3x0.6M3.5x0.6M4x0.7*M4x0.75M4.5x0.75M5x0.8*M5x0.9M6x1.0M7x1.0M8x1.25M9x1.25M10x1.5M11x1.5M12x1.75M14x2.0M16x2.0M18x2.5M20x2.5M22x2.5M24x3.0M27x3.0M30x3.5M33x3.5M36x4.0M39x4.0M42x4.52.42.93.33.253.84.24.1566.87.88.59.510.3121415.517.519.5212426.529.5323537.52.473.043.453.353.94.364.25.186.186.957.958.79.710.512.2614.2615.817.819.821.324.326.829.832.3535.3537.92.422.983.393.293.844.34.145.126.126.897.898.69.610.412.1514.1515.6517.6519.6521.1524.1526.629.632.135.137.652.53.073.483.383.934.394.245.26.2788.759.7510.5412.314.315.8517.8519.8521.3524.3526.929.932.435.437.952.453.013.423.323.874.334.185.146.146.937.938.659.6510.4412.1814.1815.717.719.721.224.226.729.732.1535.1537.7..word..
..
M45x4.5M48x5.40.54340.943.440.6543.1540.9543.540.743.2公制牙细螺纹(60°)称
呼
M1x0.2M1.1x0.2M1.2x0.2M1.4x0.2M1.6x0.2*M1.7x0.2M1.8x0.2M2x0.25M2.2x0.25*M2.3x0.25M2.5x0.35*M2.6x0.35M3x0.35M3.5x0.35M4x0.5M4.5x0.5M5x0.5M5.5x0.5M6x0.75标准径
0.80.911.21.41.451.61.751.952.052.22.22.73.23.544.555.3铜、铁
D1-上限
0.840.941.041.241.441.521.641.812.012.082.252.272.743.243.624.124.625.125.4D1-下限
0.80.911.21.41.481.61.771.972.042.22.232.73.23.554.054.555.055.32不锈钢、铝
D1-上限
0.860.961.061.261.461.541.661.832.032.12.272.292.773.273.654.154.655.155.43D1-下限
0.820.921.021.221.421.51.621.791.992.062.222.252.723.223.584.084.585.085.35..word..
..
*M6x0.5M7x0.75*M7x0.5M8x1.0M8x0.75*M8x0.5M9x1.0M9x0.75M10x1.25M10x1.0M10x0.75*M10x0.5M11x1.0M11x0.75M12x1.5M12x1.25M12x1.0*M12x0.5M14x1.5M14x1.0M15x1.5M15x1.0M16x1.5M16x1.0M17x1.5M17x1.05.56.36.577.37.588.38.899.39.51010.310.510.81111.512.51313.51414.51515.5165.576.46.577.177.47.558.188.48.959.189.49.5510.210.410.7310.9511.211.5712.713.213.714.214.715.215.7516.25.56.326.57.087.3278.18.328.859.089.32910.110.3210.610.8311.111.512.5713.113.5714.114.5715.115.616.075.66.436.67.27.437.578.28.4399.239.459.5810.2510.4510.781111.2511.6212.7513.2513.7514.2514.7515.2515.816.255.536.356.537.17.357.528.028.358.99.139.379.5310.1510.3710.6510.8811.1511.5512.6213.1513.6214.1514.6215.1515.6516.12..word..
..
M18x2.0M18x1.5M18x1.0M20x2.0M20x1.5M20x1.0M22x2.0M22x1.5M22x1.0M24x2.0M24x1.5M24x1.0M25x2.0M25x1.5M25x1.0M26x1.5M27x2.0M27x1.5M27x1.0M28x2.0M28x1.5M28x1.0M30x3.0M30x2.0M30x1.5M30x1.01616.5171818.5192020.5212222.5232323.52424.52525.5262626.527272828.52916.2516.7317.218.2518.7319.220.2520.7321.222.2522.7323.223.2523.7324.224.7325.2525.7326.226.2526.7327.227.3528.328.7729.2516.116.617.0718.118.619.0720.120.621.0722.122.623.0723.123.624.0724.625.125.626.0726.126.627.0727.1528.1528.629.116.3116.7817.2518.318.7819.2520.320.7821.2522.322.7823.2523.323.7824.2524.7825.325.7826.2526.326.7827.2527.428.3528.8229.316.216.6517.1218.1518.6519.1220.1520.6521.1220.1522.6523.1223.1523.6524.1224.6525.1525.6526.1226.1526.6527.1227.228.228.6529.15..word..
..
M32x2.0M32x1.5M33x3.0M33x2.0M33x1.5M35x1.5M36x3.0M36x2.0M36x1.5M38x1.5M39x3.0M39x2.0M39x1.5M40x3.0M40x2.0M40x1.5M42x4.0M42x3.0M42x2.0M42x1.5M45x4.0M45x3.0M45x2.0M45x1.5M48x4.0M48x3.03030.5303131.533.5333434.536.5363737.5373838.538394040.541424343.5444530.330.7730.3531.331.7733.7733.3534.334.7736.7736.3537.337.7737.3538.338.7738.3739.3540.340.7741.3742.354343.7744.3745.3530.1530.630.1531.131.633.633.1534.134.636.636.1537.137.637.1538.138.638.1539.1540.140.641.1542.1543.143.644.1545.1530.3530.8230.431.3531.8233.8233.434.3334.8236.8236.437.3537.8237.438.3538.8238.4239.440.3540.8241.4242.443.3543.8244.4245.430.230.6530.231.1531.6533.6533.234.1534.6536.6536.237.1537.6537.238.1538.6538.239.240.1540.6541.242.243.1543.6544.245.2..word..
..
M48x2.0M48x1.5M50x3.0M50x2.0M50x1.54646.5474848.546.346.7747.3548.348.746.146.647.1548.148.646.3546.8247.448.3548.8246.1546.6547.248.1548.6560°圆锥管螺纹底孔
公称直径dZ1/8"Z1/4"Z3/8"Z1/2"Z3/4"Z1"Z11/4"Z11/2"Z2"
圆柱管螺纹底孔
dG1/8"
钻孔直径
8.dG1"
钻孔直径
30.5mm镗孔直径
30.5+0.1钻头直径
钻后
不铰孔
8.711.314.818.323.729.638.544.55钻后铰孔
8.410.71417.522.828.637.343.355mm镗孔直径
镗
后
铰
孔
28.6+0.1437.3+0.1743.3+0.1755+0.2镗
后
不
铰
孔
29.6+0.1438.5+0.1744.5+0.1757+0.2..word..
..
G1/4"G3/8"G1/2"G5/8"G3/4"
11.715.218.92124.3G11/4"G11/2"G13/4"G2"
39.2+0.1745.1+0.1751.1+0.256.9+0.2..word..
篇七：螺纹底孔尺寸对照表篇八：螺纹底孔尺寸对照表
标螺纹的_般知识
一?螺纹的分类
L螺纹分内螺纹和外螺纹两种；
2.
按牙形分可分为：1）三角形蝮纹2）梯形螺纹3）矩形螺纹4）锯齿形
蝮纹；
3.
按线数分单头蝮纹和多头螺纹；
4?按旋入方向分左旋螺纹和右旋螺纹两种，右旋不标注,左旋加LH,如M24x1.5LH;5?按用途不同分有：米制普通螺纹、用螺纹密封的管螺纹、非螺纹密封的管螺纹、60。圆锥管螺纹、米制锥螺纹等
二米制普通螺纹
L米制普通螺纹用大写M表示,牙型角2c（二60。（a表示牙型半角）；
2?米制普通螺纹按蝮距分粗牙普通螺纹和细牙普通螺纹两种；
2.1?粗牙普通螺纹标记一般不标明螺距，如M20表示粗牙螺纹;细牙螺纹标记
必须标明螺距,如M30X1.5表示细牙螺纹、其中螺距为1.5。
2.2?普通螺纹用于机械零件之间的连接和紧固，一般螺纹连接多用粗牙螺纹,细
牙螺纹比同一公称直径的粗牙螺纹强度略高,自锁性能较好。
3?米制普通螺纹的标记：M20-6H.M20xl.5LH-6g-40,其中M表示米制普通
螺纹,20表示螺纹
的公称直径为20mm,1.5表示螺距，LH表示左旋,6H、6g表示螺纹精度等级,大写精度等级代号表示内螺纹,小写精度等级代号表示
外螺纹,40表示旋合长度；3.1.常用米制普通粗牙螺纹的螺距如下表（螺纹底孔直径：碳钢公称直径?P;
铸铁=公称直径?1.O5-1.1P;加工外螺纹光轩直径取=公称直径?
0.13P）:
表1常用米制普通粗牙螺纹的直径/螺2肘攻丝底孔直径
公称
直径
M5M6M8M10M12M14M16M18M2螺距
铸铁
P底孔
0.811.251.51.75222.52.54.14.96.68.310.311.713.815.317.3碳钢
底孔
4.256.78.510.4121415.517.5外螺纹光
杆直径
4.95.97.99.811.813.715.717.719.7公称直
螺距
铸铁
P径
底孔
M24M27M30M33M36M42M48M56M64333.53.544.555.5620.823.826.329.331.737.242.55057.5碳钢
底孔
212426.529.53237.54350.558外螺纹光
杆直径
23.26.729.632.635.541.547.555.563.53.2?米制普通内螺纹的加工底孔直径可用下式作近似计算：d二D-1.0825P,其中
D为公称直径，P为螺距。然后根据具体情况调整至合适加工底孔直径，具体参
考https://www.toutiao.com/a6516065915291828749/三?用螺纹密封的管螺纹（GB7306与ISO7/1相同）
L用螺纹密封的管螺纹不加填料或密封质就能防止渗漏。用螺纹密封的管螺纹有
圆柱内螺纹
和圆锥外螺纹、圆锥内螺纹和圆锥外螺纹两种连接形式。压力在5x105Pa以下时,用前一种连接已足够紧密z后一种连接通常只在高温及高压下
采用。
2?用螺纹密封的管螺纹内螺纹有圆锥、圆柱两种形式。外螺纹只有圆锥一种形式。
牙型如下：锥度1:16,牙形角55°，旧螺纹标准示例:ZG3/8;3标记示例:圆锥内螺纹Rc3/8圆柱内螺纹Rp3/8圆锥外螺纹R3/8当螺纹为左旋蝮纹时Rc3/8-LH（LH表示左旋螺纹）常用螺纹（标记：Rc3/8、Rp3/&R3/8）的基本尺寸：表2尺寸代号
每寸牙数
大径
中径
小径
1/8289.7289.1478.5661/41913.15712.30111.4453/8116.66215.80614.950建议底孔4)8.44)11.24)14.7基准距离4.06.06.4有效长度6.59.710.11/23/411-1/41-1/2141411111120.95526.41133.24941.91047.80319.79325.27931.77040.43146.32418.63124.11730.29138.95244.8454)18.34)23.64)29.74)38.34)44.18.29.510.412.712.713.214.516.819.119.14.
GB7306规定的标记方法与ISO7/1的规定是一样的。在ISO7/1作出统一之
前，各国的标记方法如下：
标准号螺纹种类
ISO圆锥内螺纹
ISO7/1-1982BS21-1973圆柱内螺纹
Rcl/2Rcl/2"圆锥外螺纹
Rpl/2Rpl/2〃
G1/2JZ/Rl/2Rl/2Gl/2R1/2DIN2999PT1/2KTPYB1/2"Z/,z/z英国
法国
德国
日本
苏联
GB
NFE03-004DIN2999JIS130203rOCT6211GB133-74PTl/2Rpl/2-DIN299/,PS1/2Z/,ZKTPYB1/2ZGl/2"ZGl/2"四?60°圆锥管螺纹(GB/T12716-91)1.该螺纹等效于美国国家标准ANSIB1.20.1中NPT螺纹部分。只有圆锥内螺纹
和圆锥外螺纹一种连接形式。
2.60°圆锥管螺纹与55°圆锥管螺纹的相同点：2.1?螺纹本身具有密封性。
22圆锥角:1:1623通过控制基面距离（基准长度）来控制直径尺寸。
24允许在螺纹副内加入密封物。
3.60°圆锥管螺纹与55°圆锥管螺纹的不同点：表4项目
60。圆锥管螺纹
标记
NPT3/8牙型角
60°
牙距不同
表5公差要求
高
用途
汽车、飞机、机床中管路连接
4?代号
NPT即旧标准代号Z:标记:NPT3/&NPT3/8?LH,其中LH表示左旋。
表5常用螺纹的基本尺寸
尺寸代号
每寸牙数
大径
中径
小径
1/82710.2429.4898.7361/41813.61612.48711.3583/81817.05515.92614.7971/21421.22319.77218.3213/41426.56825.11723.666111.533.22831.46129.69455。圆锥管螺纹
Rc3/8>Rp3/8、R3/855°
表2低
水、煤气等低压管路系统建议底孔
基准距离
4)8.64.1024)11.15.7864>14.56.0964)17.98.1284)23.28.6114>29.210.160牙数4.364.104.324.484.754.61-1/41-1/211.511.541.98548.05440.21846.28738.45144.5204)37.94)43?910.66810.6684.834.83五?非螺纹密封的管螺纹(GB7307)
1?该螺纹标准与ISO228/1相同。
2.牙型角:55。，锥度：1:16。
3标记示例:11/2左旋内螺纹G11/2-LH(右旋不标)11/2A级外螺纹G11/2A11/2B级外螺纹G11/2B内外螺纹装配Gll/2/G11/2A表6常用基本尺寸
尺寸代号
每寸牙数
大径
中径
1/8289.7289.1471/41913.15712.3013/81916.66215.8061/21420.95519.7933/41426.41125.27911133.24931.7701-1/41141.91040.431小径
8.56611.44514.95018.63124.11730.29138.952建议底孔
4)8.84)11.74)15.24)18.94)24.44)30.64)39.2基准距离
4.06.06.48.29.510.412.7有效长度
6.59.710.113.214.516.819.1尺寸代号
1-1/2每寸牙数
11大径
47.803中径
46.324小径
44.845建议底孔
4)45.1基准距离
12.7有效长度
19.14?用途：非螺纹密封的管螺纹主要用于压力较低的不、煤气管道,连接时就加填
料或密封质（麻丝、铅丹、聚四氟乙烯胶带等）,以防止渗漏。
5?非螺纹密封的管螺纹与用螺纹密封的管螺纹相同点是两者牙型一样均为55°,相同规格螺纹的螺距、牙高、基本直径相同。
6?非螺纹密封的管螺纹与用螺纹密封的管螺纹不同点是：
6.1?用螺纹密封的管螺纹内蝮纹有圆柱螺纹和圆锥螺纹两种形式，夕卜螺纹只有圆
锥螺纹一种形式。
62非螺纹密封的管螺纹不论内外螺纹都只有圆柱螺纹一种形式。
63两种螺纹部分规格的公差不同。
64非螺纹密封的内圆柱管螺纹可以和用螺纹密封的外圆锥管螺纹相连接，但非
螺纹密封的外圆柱管螺纹却不可以和用螺纹密封的内管螺纹形成用螺纹密封的连接。
7?各国的不同标记方法：表7标准号螺纹种类
ISO圆柱内螺纹
ISO228/1-1982BS2779-1973NFE03-005圆柱外螺纹
G1/2G1/2"G1/2〃HG1/2ABG1/2ABG1/2AB,Z,Z英国
法国
标准号螺纹种类
圆柱内螺纹
圆柱外螺纹
德国
日本
苏联
GB
DIN259JIS130202rOCT6357GB133-74Rl/2PF1/2"ABTPYBl/2K^2K/13Gl/2,z/zKl/2PF1/2〃ABTPYB1/2〃K/12K/13Gl/2"六?米制锥螺纹(GB1415)1.
标记:ZM10、ZM10-S.ZM10/ZM10.ZM10/ZM10-So
2.
ZM-米制锥螺纹的标记代号；标准基准距离时,省略基准距离代号；S-短基准
距离。
3?用途：适用于气体或液体管路系统依靠螺纹密封的连接螺纹(水、煤气管道用
管螺纹除外),必要时允许在螺纹配合面间加密封填料提高其密封性。
4?公径直径/螺距
直径
螺距
6,8,10112,14,16,18,20,22,241.527,30,33,36,39,42,45,48,52,56,602
篇九：螺纹底孔尺寸对照表
螺纹底孔对照表
标螺纹的_般知识
一?螺纹的分类
L螺纹分内螺纹和外螺纹两种；
2.按牙形分可分为：1）三角形蝮纹2）梯形螺纹3）矩形螺纹4）锯齿形蝮纹；
3.按线数分单头蝮纹和多头螺纹；
4?按旋入方向分左旋螺纹和右旋螺纹两种，右旋不标注,左旋加LH,如M24x1.5LH;5?按用途不同分有：米制普通螺纹、用螺纹密封的管螺纹、非螺纹密封的管螺纹、60。圆锥管螺纹、米制锥螺纹等
二米制普通螺纹
L米制普通螺纹用大写M表示,牙型角2c（二60。（a表示牙型半角）；
2?米制普通螺纹按蝮距分粗牙普通螺纹和细牙普通螺纹两种；
2.1?粗牙普通螺纹标记一般不标明螺距，如M20表示粗牙螺纹;细牙螺纹标记必须标明螺距,如M30X1.5表示细牙螺纹、其中螺距为1.5。
2.2?普通螺纹用于机械零件之间的连接和紧固，一般螺纹连接多用粗牙螺纹,细
牙螺纹比同一公称直径的粗牙螺纹强度略高,自锁性能较好。
3?米制普通螺纹的标记：M20-6H.M20xl.5LH-6g-40,其中M表示米制普通螺纹,20表示螺纹
的公称直径为20mm,1.5表示螺距，LH表示左旋,6H、6g表示螺纹精度等级,大写精度等级代号表示内螺纹,小写精度等级代号表示外螺纹,40表示旋合长度；
3.1.常用米制普通粗牙螺纹的螺距如下表（螺纹底孔直径：碳钢公称直径?P;铸铁=公称直径?1.O5-1.1P;加工外螺纹光轩直径取=公称直径?0.13P）:
表1常用米制普通粗牙螺纹的直径/螺2肘攻丝底孔直径
公称螺距铸铁碳钢外螺纹光公称直螺距铸铁碳钢外螺纹光直径P底孔底孔杆直径径P底孔底孔杆直径
M50.84.14.24.9M24320.82123.7M614.955.9M27323.82426.7M81.256.66.77.9M303.526.326.529.6M101.58.38.59.8M333.529.329.532.6M121.7510.310.411.8M36431.73235.5M14211.71213.7M424.537.237.541.5M16213.81415.7M48542.54347.5M182.515.315.517.7M565.55050.555.5M202.517.317.519.7M64657.55863.53.2?米制普通内螺纹的加工底孔直径可用下式作近似计算：d二D-1.0825P,其中
D为公称直径，P为螺距。然后根据具体情况调整至合适加工底孔直径，具体参
考
https://http://www..com/doc/407732890.html,/a6516065915291828749/三?用螺纹密封的管螺纹（GB7306与ISO7/1相同）
L用螺纹密封的管螺纹不加填料或密封质就能防止渗漏。用螺纹密封的管螺纹有圆柱内螺纹
和圆锥外螺纹、圆锥内螺纹和圆锥外螺纹两种连接形式。压力在5x105Pa以下时,用前一种连接已足够紧密z后一种连接通常只在高温及高压下采用。
2?用螺纹密封的管螺纹内螺纹有圆锥、圆柱两种形式。外螺纹只有圆锥一种形式。牙型如下：锥度1:16,牙形角55°，旧螺纹标准示例:ZG3/8;3标记示例:圆锥内螺纹Rc3/圆柱内螺纹Rp3/8圆锥外螺纹R3/8当螺纹为左旋蝮纹时Rc3/8-LH（LH表示左旋螺纹）
常用螺纹（标记：Rc3/8、Rp3/&R3/8）的基本尺寸：
表2尺寸代号每寸牙数大径中径小径建议底孔基准距离有效长度1/8289.7289.1478.5664)8.44.06.51/41913.15712.30111.4454)11.26.09.73/81916.66215.80614.9504)14.76.410.11/21420.95519.79318.6314)18.38.213.23/41426.41125.27924.1174)23.69.514.511133.24931.77030.2914)29.710.416.81-1/41141.91040.43138.9524)38.312.719.11-1/21147.80346.32444.8454)44.112.719.14.GB7306规定的标记方法与ISO7/1的规定是一样的。在ISO7/1作出统一之
前，各国的标记方法如下：
标准号螺纹种类圆锥内螺纹圆柱内螺纹圆锥外螺纹
ISOISO7/1-1982Rcl/2Rpl/2Rl/2英国BS21-1973Rcl/2"Rpl/2〃Rl/2/z法国NFE03-004G1/2Z/JGl/2,z德国DIN2999Rpl/2-DIN299R1/2DIN2999日本JIS130203PTl/2/,PS1/2,ZPT1/2Z/苏联rOCT6211KTPYB1/2Z/KTPYB1/2"GBGB133-74ZGl/2"ZGl/2"四?60°圆锥管螺纹(GB/T12716-91)1.该螺纹等效于美国国家标准ANSIB1.20.1中NPT螺纹部分。只有圆锥内螺纹和圆锥外螺纹一种连接形式。
2.60°圆锥管螺纹与55°圆锥管螺纹的相同点：
2.1?螺纹本身具有密封性。
22圆锥角:1:1623通过控制基面距离（基准长度）来控制直径尺寸。
24允许在螺纹副内加入密封物。
3.60°圆锥管螺纹与55°圆锥管螺纹的不同点：表4项目60。圆锥管螺纹55。圆锥管螺纹
标记NPT3/8Rc3/8>Rp3/8、R3/8牙型角60°55°
牙距不同表5表2公差要求高低
用途汽车、飞机、机床中管路连接水、煤气等低压管路系统4?代号NPT即旧标准代号Z:标记:NPT3/&NPT3/8?LH,其中LH表示左旋。
尺寸代号每寸牙数大径中径
1/82710.2429.4891/41813.61612.4873/81817.05515.9261/21421.22319.7723/41426.56825.117111.533.22831.461小径建议底孔基准距离牙数8.7364)8.64.1024.3611.3584)11.15.7864.1014.7974>14.56.0964.3218.3214)17.98.1284.4823.6664)23.28.6114.7529.6944>29.210.1604.60表5常用螺纹的基本尺寸
1-1/411.541.98540.21838.4514)37.910.6684.831-1/211.548.05446.28744.5204)43?910.6684.83五?非螺纹密封的管螺纹(GB7307)1?该螺纹标准与ISO228/1相同。
2.牙型角:55。，锥度：1:16。
3标记示例:11/2左旋内螺纹G11/2-LH(右旋不标)11/2A级外螺纹G11/2A11/2B级外螺纹G11/2B内外螺纹装配Gll/2/G11/2A表6常用基本尺寸
尺寸代号每寸牙数大径中径小径建议底孔基准距离有效长度1/8289.7289.1478.5664)8.84.06.51/41913.15712.30111.4454)11.76.09.73/81916.66215.80614.9504)15.26.410.11/21420.95519.79318.6314)18.98.213.23/41426.41125.27924.1174)24.49.514.511133.24931.77030.2914)30.610.416.81-1/41141.91040.43138.9524)39.212.719.1尺寸代号每寸牙数大径中径小径建议底孔基准距离有效长度1-1/21147.80346.32444.8454)45.112.719.14?用途：非螺纹密封的管螺纹主要用于压力较低的不、煤气管道,连接时就加填料或密封质（麻丝、铅丹、聚四氟乙烯胶带等）,以防止渗漏。
5?非螺纹密封的管螺纹与用螺纹密封的管螺纹相同点是两者牙型一样均为55°,相同规格螺纹的螺距、牙高、基本直径相同。
6?非螺纹密封的管螺纹与用螺纹密封的管螺纹不同点是：
6.1?用螺纹密封的管螺纹内蝮纹有圆柱螺纹和圆锥螺纹两种形式，夕卜螺纹只有圆锥螺纹一种形式。
62非螺纹密封的管螺纹不论内外螺纹都只有圆柱螺纹一种形式。
63两种螺纹部分规格的公差不同。
64非螺纹密封的内圆柱管螺纹可以和用螺纹密封的外圆锥管螺纹相连接，但非螺纹密封的外圆柱管螺纹却不可以和用螺纹密封的内管螺纹形成用螺纹密封的连接。
7?各国的不同标记方法：表7标准号螺纹种类圆柱内螺纹圆柱外螺纹
ISOISO228/1-1982G1/2G1/2AB英国BS2779-1973G1/2"G1/2,ZAB法国NFE03-005G1/2〃HG1/2,ZAB标准号螺纹种类圆柱内螺纹圆柱外螺纹
德国DIN259Rl/2Kl/2日本JIS130202PF1/2"ABPF1/2〃AB
苏联rOCT6357TPYBl/2/zK^2K/13TPYB1/2〃K/12K/13GBGB133-74Gl/2,zGl/2"六?米制锥螺纹(GB1415)1.标记:ZM10、ZM10-S.ZM10/ZM10.ZM10/ZM10-So2.ZM-米制锥螺纹的标记代号；标准基准距离时,省略基准距离代号；S-短基准距离。3?用途：适用于气体或液体管路系统依靠螺纹密封的连接螺纹(水、煤气管道用管螺纹除外),必要时允许在螺纹配合面间加密封填料提高其密封性。
4?公径直径/螺距
直径6,8,1012,14,16,18,20,22,2427,30,33,36,39,42,45,48,52,56,60螺距11.52
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