螺丝攻下孔径对照表
各种标准螺纹螺距底孔
60%100%60%100%60%100%60%100%60%100% M1 ×0.250.750.840.73M1 ×0.20.800.870.78W1/16-60 1.20 1.26 1.05Nr.1-64 1.50 1.60 1.42Nr.0-80 1.30 1.32 1.18 M1.1 ×0.250.850.940.83M1.1 ×0.20.900.970.88W3/32-48 1.80 1.97 1.70Nr.2-56 1.80 1.89 1.69Nr.1-72 1.60 1.62 1.47 M1.2 ×0.250.95 1.040.93M1.2 ×0.2 1.00 1.070.98W1/8-40 2.60 2.69 2.36Nr.3-48 2.10 2.17 1.94Nr.2-64 1.90 1.93 1.75 M1.4×0.3 1.10 1.21 1.08M1.4 ×0.2 1.20 1.27 1.18W5/32-32 3.10 3.36 2.95Nr.4-40 2.30 2.43 2.16Nr.3-56 2.10 2.22 2.02 M1.6 ×0.35 1.25 1.37 1.22M1.6 ×0.2 1.40 1.47 1.38W3/16-24 3.60 3.95 3.41Nr.5-40 2.60 2.76 2.49Nr.4-48 2.40 2.50 2.27 M1.7 ×0.35 1.35 1.47 1.32M1.8 ×0.2 1.60 1.67 1.58W7/32-24 4.50 4.74 4.20Nr.6-32 2.75 2.99 2.65Nr.5-44 2.70 2.80 2.55 M1.8 ×0.35 1.45 1.57 1.42M2 ×0.25 1.75 1.84 1.73W1/4-20 5.10 5.37 4.72Nr.8-32 3.50 3.65 3.31Nr.6-40 3.00 3.09 2.82 M2 ×0.4 1.60 1.74 1.57M2.2 ×0.25 1.95 2.07 1.93W5/16-18 6.50 6.85 6.13Nr.10-24 3.80 4.14 3.68Nr.8-36 3.50 3.71 3.40 M2.2 ×0.45 1.75 1.91 1.71M2.5 ×0.35 2.15 2.27 2.12W3/8-167.908.317.49Nr.12-24 4.50 4.80 4.34Nr.10-32 4.10 4.31 3.97 M2.3 ×0.4 1.90 2.04 1.87M3 ×0.35 2.65 2.77 2.62W7/16-149.309.728.791/4-20 5.10 5.53 4.98Nr.12-28 4.70 4.90 4.50 M2.5 ×0.45 2.05 2.21 2.01M3.5 ×0.35 3.15 3.27 3.12W1/2-1210.5011.079.995/16-18 6.507.02 6.411/4-28 5.50 5.76 5.37 M2.6 ×0.45 2.15 2.31 2.11M4 ×0.5 3.50 3.68 3.46W9/16-1212.0012.6611.583/8-167.908.497.815/16-24 6.907.25 6.79 M3 ×0.5 2.50 2.68 2.46M4.5 ×0.5 4.00 4.18 3.96W5/8-1113.5014.1012.927/16-149.309.939.153/8-248.508.848.38 M3 ×0.6 2.40 2.61 2.35M5 ×0.5 4.50 4.68 4.46W3/4-1016.5017.1015.801/2-1310.8011.4310.587/16-209.9010.299.74 M3.5 ×0.6 2.90 3.11 2.85M5.5 ×0.5 5.00 5.18 4.96W7/8-919.2520.0618.619/16-1212.2012.9112.001/2-2011.5011.8811.33 M4 ×0.7 3.30 3.55 3.24M6 ×0.5 5.50 5.68 5.46W1-822.0022.9621.335/8-1113.5014.3813.389/16-1812.9013.3712.76 M4 ×0.75 3.25 3.51 3.19M6 ×0.75 5.25 5.51 5.19W11/8-724.7525.7923.933/4-1016.5017.4016.305/8-1814.5014.9614.35 M4.5 ×0.75 3.75 4.01 3.69M7 ×0.75 6.25 6.51 6.19W11/4-727.7528.9627.107/8-919.5020.3919.173/4-1617.5018.0217.33 M5 ×0.8 4.20 4.48 4.13M8 ×0.757.257.517.19W13/8-630.2031.6729.501-822.2523.3421.967/8-1420.2521.0520.26 M5 ×0.9 4.10 4.70 4.66M8 ×1.07.007.35 6.92W11/2-633.5034.8532.6811/4-728.0029.3927.821-1223.2524.0323.11 M6 ×1.0 5.00 5.35 4.92M9 ×1.08.008.357.92W15/8-535.5037.3734.7713/8-631.0032.1830.3411/8-1226.5027.2026.28 M7 ×1.0 6.00 6.35 5.92M10 ×0.759.259.519.19W13/4-538.5040.5537.9411/2-634.5035.3533.5211/4-1229.5030.3829.46 M8 ×1.25 6.807.19 6.65M10 ×1.09.009.358.92W17/8-4.541.5043.2940.4013/4-539.0041.1538.9513/8-1232.5033.3532.63 M9 ×1.257.808.197.65M10 ×1.258.759.198.65W2-4.544.5046.4643.572-4.545.0047.1344.6911/2-1236.0036.7335.81 M10 ×1.58.509.038.38M11 ×1.010.0010.359.92M11 ×1.59.5010.039.38M12 ×0.7511.2511.5111.19M12 ×1.7510.2010.8610.11M12 ×1.011.0011.3510.92M14 ×2.012.0012.7011.83M12 ×1.2510.7511.1910.65M16 ×2.014.0014.7013.83M12 ×1.510.5011.0310.38M18 ×2.515.5016.3815.29M14 ×1.013.0013.3512.9260%100%60%100%60%100% M20 ×2.517.5018.3817.29M14 ×1.2512.7513.1912.65W1/16-60 1.40 1.42 1.32Nr.1-64 1.70 1.73 1.64Nr.0-80 1.40 1.42 1.35 M22 ×2.519.5020.3819.29M14 ×1.512.5013.0312.38W3/32-48 2.10 2.18 2.04Nr.2-56 2.00 2.04 1.94Nr.1-72 1.70 1.74 1.66 M24 ×3.021.0022.0520.75M15 ×1.014.0014.3513.92W1/8-40 2.85 2.93 2.77Nr.3-48 2.25 2.34 2.23Nr.2-64 2.00 2.06 1.97 M27 ×3.024.0025.0523.75M15 ×1.2513.7514.1913.65W5/32-32 3.55 3.66 3.46Nr.4-40 2.55 2.64 2.50Nr.3-56 2.30 2.37 2.27 M30 ×3.526.5027.7326.21M15 ×1.513.5014.0313.38W3/16-24 4.25 4.36 4.08Nr.5-40 2.90 2.97 2.83Nr.4-48 2.60 2.67 2.56 M33 ×3.529.5030.7329.21M16 ×1.015.0015.3514.92W7/32-24 5.05 5.15 4.88Nr.6-32 3.15 3.25 3.08Nr.5-44 2.90 2.99 2.86 M36 ×4.032.0033.4031.67M16 ×1.2514.7515.1914.65W1/4-20 5.75 5.86 5.54Nr.8-32 3.80 3.91 3.74Nr.6-40 3.20 3.30 3.16 M39 ×4.035.0036.4034.67M16 ×1.514.5015.0314.38W5/16-187.307.407.03Nr.10-24 4.35 4.48 4.25Nr.8-36 3.85 3.94 3.78 M42 ×4.537.5039.0837.13M18 ×1.017.0017.3516.92W3/8-168.808.928.51Nr.12-24 5.00 5.14 4.91Nr.10-32 4.45 4.57 4.40 M45 ×4.540.5042.0840.13M18 ×1.2516.7517.1916.65W7/16-1410.3010.429.951/4-20 5.75 5.94 5.66Nr.12-28 5.05 5.19 4.99 M48 ×5.043.0044.7542.59M18 ×1.516.5017.0316.38W1/2-1211.7511.8911.345/16-187.307.487.171/4-28 5.95 6.06 5.86 M52 ×5.047.0048.7546×59M18 ×2.016.0016.7015.833/8-168.809.018.675/16-247.407.597.36 M56 ×5.550.5052.4350.05M20 ×1.019.0019.3518.927/16-1410.3010.5210.133/8-249.009.188.95 M60 ×5.554.5056.4354.05M20 ×1.2518.7519.1918.651/2-1311.8012.0711.641/2-2012.1012.2912.01 M64 ×658.0060.1057.50M20 ×1.518.5019.0318.38M68 ×662.0064.1061.50M20 ×2.018.0018.7017.83PT(Rc)PS(Pp)PF(G)M72 ×666.0068.1065.50M22 ×1.021.0021.3520.92下孔径下孔径下孔径M76 ×670.0072.1069.50M22 ×1.2520.7521.1920.651/16-28 6.30 6.50 6.70英时英时//公 对照表无屑丝攻美制细牙螺纹无屑丝攻美制细牙螺纹((UNFUNF))规格规格规格规格公制粗牙螺纹公制粗牙螺纹((M)下孔径(%)下孔径规格公制细牙螺纹公制细牙螺纹((M)下孔径下孔径(%)无屑丝攻英制粗牙螺纹无屑丝攻英制粗牙螺纹((W)规格规格英制管牙螺纹无屑丝攻美制粗牙螺纹无屑丝攻美制粗牙螺纹((UNCUNC))针车牙螺纹针车牙螺纹((SMSM))英制粗牙螺纹英制粗牙螺纹((W)下孔径下孔径(%)规格美制细牙螺纹美制细牙螺纹((UNFUNF))下孔径下孔径(%)规格螺丝攻下孔径对照表下孔径下孔径(%)下孔径下孔径(%)下孔径下孔径(%)美制粗牙螺纹美制粗牙螺纹((UNCUNC))下孔径下孔径(%)M22 ×1.520.5021.0320.381/8-288.308.608.70M22 ×2.020.0020.0719.831/4-1911.0011.5011.7060%100%M24 ×1.023.0023.3522.923/8-1914.5015.0015.25SM1/16-80 1.30 1.34 1.181/16M24 ×1.2522.7523.1922.651/2-1418.1018.5019.00SM5/64-64 1.60 1.68 1.473/32M24 ×1.522.5023.0322.385/8-1421.00SM3/32-100 2.15 2.18 2.051/860%100%M24 ×2.022.0022.7021.833/4-1423.5024.0024.50SM3/32-56 1.90 2.03 1.795/32M1×0.250.900.920.86M25 ×1.024.0024.1923.927/8-1428.00SM1/8-44 2.55 2.73 2.4311/64M1.1×0.25 1.00 1.020.96M25 ×1.523.5024.0323.381-1129.6030.2530.50SM1/8-40 2.50 2.68 2.353/16M1.2×0.25 1.10 1.12 1.06M25 ×2.023.0023.7022.8311/8-1135.50SM9/64-40 2.90 3.08 2.757.32M1.4×0.3 1.25 1.30 1.24M26 ×1.524.5025.0324.3811/4-1138.1039.0039.50SM11/64-40 3.70 3.87 3.5415/64M1.6×0.35 1.45 1.49 1.41M27 ×1.026.0026.3525.9211/2-1144.0044.9045.00SM3/16-32 3.95 4.14 3.731/4M1.7×0.35 1.55 1.59 1.51M27 ×1.525.5026.0325.3813/4-1151.00SM3/16-28 3.80 4.06 3.589/32M1.8×0.35 1.65 1.69 1.61M27 ×2.025.0025.7024.832-1155.6056.6057.00SM7/32-32 4.70 4.94 4.535/16M2×0.4 1.80 1.87 1.78M28 ×1.526.5027.0326.38SM15/64-28 5.00 5.25 4.773/8M2.2×0.45 2.00 2.05 1.96M28 ×2026.0026.7025.83SM1/4-40 5.70 5.86 5.537/16M2.3×0.4 2.10 2.17 2.08M30 ×1.029.0029.3528.92SM1/4-28 5.40 5.64 5.171/2M2.5×0.45 2.30 2.35 2.26M30 ×1.528.5029.0328.38SM1/4-24 5.25 5.53 4.989/16M2.6×0.45 2.40 2.45 2.36M30 ×2.028.0028.7027.83NPT SM9/32-28 6.20 6.44 5.975/8M3×0.5 2.75 2.84 2.73M32 ×1.530.5031.0330.38下孔径SM9/32-20 5.80 6.15 5.4911/16M3.5×0.6 3.20 3.31 3.18M33 ×1.531.5032.0331.381/16-27 6.20SM5/16-287.007.23 6.673/4M4×0.7 3.65 3.77 3.62M33 ×2.031.0031.7030.831/8-278.50SM5/16-24 6.857.11 6.567/8M4.5×0.75 4.15 4.26 4.09M33 ×3.030.0031.5029.751/4-1811.00SM5/16-18 6.50 6.84 6.101M5×0.8 4.60 4.74 4.57M35 ×1.533.5034.0333.383/8-1814.50SM3/8-288.558.828.3511/8M6×1.0 5.50 5.68 5.46M36 ×1.534.5035.0334.381/2-1418.00SM3/8-188.058.437.6911/4M7×1.0 6.50 6.68 6.46M36 ×2.034.0034.7033.833/4-1423.00SM7/16-2810.1510.419.9313/8M8×1.257.357.597.32M36 ×3.033.0034.0532.751-111/２29.00SM7/16-169.409.889.0511/2M9×1.258.408.598.32M38 ×1.536.5037.0336.3811/4-111/２38.00SM1/2-2811.7511.9911.5215/8M10×1.59.259.519.19M39 ×1.537.5038.0337.3811/2-111/２44.00SM1/2-2011.3511.7111.0513/4M12×1.7511.1011.4311.05M39 ×2.037.0037.7036.832-111/３56.00SM1/2-1210.4011.059.9517/8M39 ×3.036.0037.0535.7521/265.892M40 ×1.538.5039.0338.38M40 ×2.038.0038.7037.83M40 ×3.037.0038.0536.75M42 ×1.540.5041.0340.3860%100%M42 ×2.040.0040.7039.83Pg7 -2011.4011.6911.08M42 ×3.039.0040.0538.75Pg9 -1814.0014.3313.66M42 ×4.038.0040.7037.66Pg11 -1817.2517.7317.06M45 ×1.543.5044.0343.38Pg13.5 -1819.0019.5318.86M45 ×2.043.0043.7042.83Pg16 -1821.2521.6320.96M45 ×3.042.0043.0541.75Pg21 -1626×7527.2426.48M45 ×4.041.0042.4040.67Pg29 -1635.5035.9435.18M48 ×2.046.0046.7045.83Pg36 -1645.5045.9445.18M48 ×3.045.0046.0544.75Pg42 -1652.5052.9452.08M48 ×4.044.0045.4043.67Pg48 -1657.5058.2457.48M50 ×1.548.5049.0348.38M50 ×2.048.0048.7047.83M50 ×3.047.0048.0546.75M52 ×1.550.5051.0350.38M52 ×2.050.0050.7049.83M52 ×3.049.0050.0548.7567.4622.225025.400028.575050.800047.625041.275044.450038.100034.925031.750014.287515.875017.462519.0500美制管牙螺纹无屑丝攻公制粗牙螺纹无屑丝攻公制粗牙螺纹((M )Pg Pg钢管牙钢管牙规格规格规格下孔径下孔径(%)56.4044.45下孔径下孔径(%)规格下孔径下孔径(%)12.70004.36563.96883.17501.587538.1029.4023.4018.1514.7011.158.756.35下孔径NPS 11.112512.70009.52507.93757.14386.35005.95315.55635厘7厘半1分1分2厘半--1分半1分7厘半2.3813--2分2分2厘半2分半3分3分半4分4分半5分5分半6分7分1吋1吋1分1吋2分1吋3分2吋1吋4分1吋5分1吋6分1吋7分。
螺丝攻下径对照表
切削丝攻公制粗牙(M)（通用）公制细牙(MF)1/2规格下孔径下孔径(%)规格下孔径下孔径(%) 60%100%60%100%M1.0 X0.250.750.840.73M1 X0.20.80.870.78 M1.1 X0.250.850.940.83M1.1 X0.20.90.970.88 M1.2 X0.250.95 1.040.93M1.2 X0.21 1.070.98 M1.4 X0.3 1.1 1.21 1.08M1.4 X0.2 1.2 1.27 1.18 M1.6 X0.35 1.25 1.37 1.22M1.6 X0.2 1.4 1.47 1.38 M1.7 X0.35 1.35 1.47 1.32M1.8 X0.2 1.6 1.67 1.58 M1.8 X0.35 1.45 1.57 1.42M2 X0.25 1.75 1.84 1.73 M2 X0.4 1.6 1.74 1.57M2.2 X0.25 1.95 2.07 1.93 M2.2 X0.45 1.75 1.01 1.71M2.5 X0.35 2.15 2.27 2.12 M2.3 X0.4 1.9 2.04 1.87M3 X0.35 2.65 2.77 2.62 M2.5 X0.45 2.05 2.21 2.01M3.5 X0.35 3.15 3.27 3.12 M2.6 X0.45 2.15 2.31 2.11M4 X0.5 3.5 3.68 3.46 M3 X0.5 2.5 2.68 2.46M4.5 X0.54 4.18 3.96 M3 X0.6 2.4 2.61 2.35M5 X0.5 4.5 4.68 4.46 M3.5 X0.6 2.9 3.11 2.85M5.5 X0.55 5.18 4.96 M4 X0.7 3.3 3.55 3.24M6 X0.5 5.5 5.68 5.46 M4 X0.75 3.25 3.51 3.19M6 X0.75 5.25 5.51 5.19 M4.5 X.75 3.75 4.01 3.69M7 X0.75 6.25 6.51 6.19 M5 X0.8 4.2 4.48 4.13M8 X0.757.257.517.19 M5 X0.9 4.1 4.7 4.03M8 X1.077.35 6.92 M6 X0.105 5.35 4.92M9 X1.088.357.92 M7 X0.106 6.35 5.92M10 X0.759.259.519.19 M8 X1.25 6.87.19 6.65M10 X1.099.358.92 M9 X1.257.88.197.65M10 X1.258.759.198.65 M10 X1.58.59.038.38M11 X1.01010.359.92 M11 X1.59.510.039.38M12 X0.7511.2511.5111.19 M12 X1.7510.210.8610.11M12 X1.01111.3510.92 M14 X2.01212.711.83M12 X1.2510.7511.1910.65 M16 X2.01414.713.83M12 X1.510.511.0310.38 M18 X2.515.516.3815.29M14 X1.01313.3512.92 M20 X2.517.518.3817.29M14 X1.2512.7513.1912.65 M22 X2.519.520.3819.29M14 X1.512.513.0312.38 M24 X3.02122.0520.75M15 X1.01414.3513.92 M27 X3.02425.0523.75M15 X1.2513.7514.1913.65 M30 X3.526.527.7326.21M15 X1.513.514.0313.38 M33 X3.529.530.7329.21M16 X1.01515.3514.92 M36 X4.03233.431.67M16 X1.2514.7515.1914.65 M39 X4.03536.434.67M16 X1.514.515.0314.38 M42 X4.537.539.0837.13M18 X1.01717.3516.92 M45 X4.540.542.0840.13M18 X1.2516.7517.1916.65 M48 X5.04344.7542.59M18 X1.516.517.0316.38 M52 X5.04748.7546.59M18 X2.01616.715.83 M56 X5.550.552.4350.05M20 X1.01919.3518.92 M60 X5.554.556.4354.05M20 X1.2518.7519.1918.65 M64 X65860.157.5M20 X1.518.519.0318.38 M68 X66264.161.5M20 X2.01818.717.83 M72 X66668.165.5M22 X1.02121.3520.92 M76 X67072.169.5M22 X1.2520.7521.1920.65M22 X1.520.521.0320.38公制细牙公制细牙(MF)2/2(MF)2/2挤压丝攻公制粗牙(M)M22 X2.02020.0719.83规格下孔径下孔径(%)M24 X1.02323.3522.92 60%100%M24 X1.2522.7523.1922.65M1 X0.250.90.920.86M24 X1.522.523.0322.38M1.1 X0.251 1.020.96M24 X2.02222.721.83M1.2 X0.25 1.1 1.12 1.06M25 X1.02424.1923.92M1.4 X0.3 1.25 1.3 1.24M25 X1.523.524.0323.38M1.6 X0.35 1.45 1.49 1.41M25 X2.02323.722.83M1.7 X0.35 1.55 1.59 1.51M26 X1.524.525.0324.38M1.8 X0.35 1.65 1.69 1.61M27 X1.02626.3525.92M2 X0.4 1.8 1.87 1.78M27 X1.525.526.0325.38M2.2 X0.452 2.05 1.96M27 X2.02525.724.83M2.3 X0.4 2.1 2.17 2.08M28 X1.526.527.0326.38M2.5 X0.45 2.3 2.35 2.26M28 X2.02626.725.83M2.6 X0.45 2.4 2.45 2.36M30 X1.02929.3528.92M3 X0.5 2.75 2.84 2.73M30 X1.528.529.0328.38M3.5 X0.6 3.2 3.31 3.18M30 X2.02828.727.83M4 X0.7 3.65 3.77 3.62M32 X1.530.531.0330.38M4.5 X0.75 4.15 4.26 4.09M33 X1.531.532.0331.38M5 X0.8 4.6 4.74 4.57M33 X2.03131.730.83 1 1 M6 X1.0 5.5 5.68 5.46M33 X3.03031.529.75 1 1 M7 X1.0 6.5 6.68 6.46M35 X1.533.534.0333.38M8 X1.257.357.597.32M36 X1.534.535.0334.38M9 X1.258.48.598.32M36 X2.03434.733.83M10 X1.59.259.519.19M36 X3.03334.0532.75M12 X1.7511.111.4311.05M38 X1.536.537.0336.38M39 X1.537.538.0337.38护套丝攻(M)M39 X2.03737.736.83规格下孔径下孔径(%)M39 X3.03637.0535.75最小最大M40 X1.538.539.0338.38M3 X0.5 3.1 3.11 3.22M40 X2.03838.737.83 M4 X0.7 4.2 4.15 4.29M40 X3.03738.0536.75 M5 X0.8 5.2 5.17 5.33M42 X1.540.541.0340.38 M6 X1.0 6.3 6.22 6.41M42 X2.04040.739.83 M8 X1.258.48.278.48M42 X3.03940.538.75 M10 X1.510.410.3210.56M42 X4.03840.737.66 M12 X1.7512.512.3812.64M45 X1.543.544.0343.38 M14 X2.014.514.4314.73M45 X2.04343.742.83 M16 X2.016.516.4316.73M45 X3.04243.0541.75 M18 X2.518.718.5418.9M45 X4.04142.440.67 M20 X2.520.720.5420.9M48 X2.04646.745.83M48 X3.04546.0544.75M48 X4.04445.443.67M50 X1.548.549.0348.38M50 X2.04848.747.83M50 X3.04748.0546.75M52 X1.550.551.0350.38M52 X2.05050.749.83M52 X3.04950.0548.75英制粗牙(W)美制粗牙(UNC)规格下孔径下孔径(%)规格下孔径下孔径(%) 60%100%60%100%W1/16 -60 1.2 1.26 1.05Nr.1 -64 1.5 1.6 1.42 W3/32 -48 1.8 1.97 1.7Nr.2 -56 1.8 1.89 1.69 W1/8 -40 2.6 2.69 2.36Nr.3 -48 2.1 2.17 1.94 W5/32 -32 3.1 3.36 2.95Nr.4 -40 2.3 2.43 2.16 W3/16 -24 3.6 3.95 3.41Nr.5 -40 2.6 2.76 2.49 W7/32 -24 4.5 4.74 4.2Nr.6 -32 2.75 2.99 2.65 W1/4 -20 5.1 5.37 4.72Nr.8 -32 3.5 3.65 3.31 W5/16 -18 6.5 6.85 6.13Nr.10 -24 3.8 4.14 3.68 W3/8 -167.98.317.49Nr.12 -24 4.5 4.8 4.34 W7/16 -149.39.728.791/4 -20 5.1 5.53 4.98 W1/2 -1210.511.079.995/16 -18 6.57.02 6.41 W9/16 -121212.6611.583/8 -167.98.497.81 W5/8 -1113.514.112.927/16 -149.39.939.15 W3/4 -1016.517.115.81/2 -1310.811.4310.58 W7/8 -919.2520.0618.619/16 -1212.212.9112 W12222.9621.335/8 -1113.514.3813.38 W 1 1/824.7525.7923.933/4 -1016.517.416.3 W 1 1/427.7528.9627.17/8 -919.520.3919.17 W 1 3/830.231.6729.5 1 -822.2523.3421.96 W 1 1/233.534.8532.68 1 1/4 -72829.3927.82 W 1 5/835.537.3734.77 1 3/8 -63132.1830.34 W 1 3/438.540.5537.94 1 1/2 -634.535.3533.52 W 1 7/841.543.2940.4 1 3/4 -53941.1538.95 W 244.546.4643.57 2 -4.54547.1344.69无屑丝攻英制粗牙(W)无屑丝攻美制粗牙(UNC)规格下孔径下孔径(%)规格下孔径下孔径(%) 60%100%60%100%W1/16 -60 1.4 1.42 1.32Nr.1 -64 1.7 1.73 1.64 W3/32 -48 2.1 2.18 2.04Nr.2 -562 2.04 1.94 W1/8 -40 2.85 2.93 2.77Nr.3 -48 2.25 2.34 2.23 W5/32 -32 3.55 3.66 3.46Nr.4 -40 2.55 2.64 2.5 W3/16 -24 4.25 4.36 4.08Nr.5 -40 2.9 2.97 2.83 W 7/32 -24 5.05 5.15 4.88Nr.6 -32 3.15 3.25 3.08 W1/4 -20 5.75 5.86 5.54Nr.8 -32 3.8 3.91 3.7 W5/16 -187.37.47.03Nr.10 -24 4.35 4.48 4.25 W3/8 -168.88.928.51Nr.12 -245 5.14 4.91 W7/16 -1410.310.429.951/4 -20 5.75 5.94 5.66 W1/2 -1211.7511.8911.345/16 -187.37.487.173/8 -168.89.018.67英制管牙7/16 -1410.310.5210.13规格PT(Rc)PS(Pp)PF(G)1/2 -1311.812.0711.64下孔径下孔径下孔径1/16 -28 6.3 6.5 6.7护套丝攻(UNC)1/8 -28 8.38.68.7规格下孔径下孔径(%)1/4 -191111.511.7最小最大3/8 -1914.51515.25Nr.4 -40 3.1 2.98 3.18 1/2 -1418.118.519Nr.6 -32 3.8 3.68 3.885/8 -1421Nr.8 -32 4.4 4.34 4.52 3/4 -1423.52424.5Nr.10 -24 5.2 5.05 5.28 7/8 -14281/4 -20 6.7 6.63 6.87 1 -1129.630.2530.55/16 -188.48.248.49 1 1/8 -1135.53/8 -16109.8710.13 1 1/4 -1138.13939.57/16 -1411.611.5111.78 1 1/2 -114444.9451/2 -1313.213.1213.391 3/4 -11519/16 -1214.914.7515.032 -1155.656.6575/8 -1116.516.3816.673/4 -1019.819.619.91美制管牙规格NPT NPS钢管牙(Pg)下孔径下孔径规格下孔径下孔径(%)1/16 -27 6.2 6.3560%100% 1/8 -278.58.75Pg7 -2011.411.7711.29 1/4 -181111.15Pg9 -181414.3913.85 3/8 -1814.514.7Pg11 -1817.417.7917.25 1/2 -141818.15Pg13.5 -1819.119.5919.05 3/4 -142323.4Pg16 -1821.321.6921.15 1 -11 1/22929.4Pg21 -1626.927.3926.79 1 1/4 -11 1/23838.1Pg29 -1635.636.0935.491 1/2 -11 1/24444.45Pg36 -1645.646.0945.492 -11 1/25656.4Pg42 -1652.653.0952.49美制细牙(UNF)规格下孔径下孔径(%) 60%100%Nr.0 -80 1.3 1.32 1.18 Nr.1 -72 1.6 1.62 1.47 Nr.2 -64 1.9 1.93 1.75 Nr.3 -56 2.1 2.22 2.02 Nr.4 -48 2.4 2.5 2.27 Nr.5 -44 2.7 2.8 2.55 Nr.6 -403 3.09 2.82 Nr.8 -36 3.5 3.71 3.4 Nr.10 -32 4.1 4.31 3.97 Nr.12 -28 4.7 4.9 4.5 1/4 -28 5.5 5.76 5.37 5/16 -24 6.97.25 6.79 3/8 -248.58.848.38 7/16 -209.910.299.74 1/2 -2011.511.8811.33 9/16 -1812.913.3712.76 5/8 -1814.514.9614.35 3/ 4 -1617.518.0217.33 7/8 -1420.2521.0520.26 1 -1223.2524.0323.11 1 1/8 -1226.527.226.28 1 1/4 -1229.530.3829.46 1 3/8 -123333.3532.63 1 1/2 -123636.7335.81无屑丝攻美制细牙(UNF)规格下孔径下孔径(%) 60%100%Nr.0 -80 1.4 1.42 1.35 Nr.1 -72 1.7 1.74 1.66 Nr.2 -642 2.06 1.97 Nr.3 -56 2.3 2.37 2.27 Nr.4 -48 2.6 2.67 2.56 Nr.5 -44 2.7 2.8 2.55 Nr.6 -40 3.2 3.3 3.16 Nr.8 -36 3.85 3.94 3.78 Nr.10 -32 4.45 4.57 4.4 Nr.12 -28 5.05 5.19 4.98 1/4 -28 5.95 6.06 5.86 5/16 -247.47.597.36 3/8 -2499.188.95 1/2 -2012.112.2912.01套丝攻(UNF)规格下孔径下孔径(%)最小最大Nr.4 -483 2.96 3.12 Nr.6 -40 3.7 3.64 3.82Nr.8 -36 4.4 4.32 4.5 Nr.10 -32 5.15 5.18 1/4 -28 6.6 6.55 6.72 5/16 -248.28.178.35 3/8 -249.89.759.93 7/16 -2011.511.3911.59 1/2 -2013.112.9813.18 9/16 -1814.714.5914.8 5/8 -1816.316.1816.39 3/4 -1619.519.3919.61美制号数牙之外径换算番数英寸公尺NR.00.06 1.524NR.10.073 1.854NR.20.086 2.184NR.30.099 2.515NR.40.112 2.845NR.50.125 3.175NR.60.138 3.505NR.80.164 4.166NR.100.19 4.826NR.120.216 5.486。
螺丝攻牙孔径对照表
螺丝攻牙钻孔径对照表美制（粗）挤牙丝攻钻孔径公制挤牙丝攻钻孔径美制细牙螺纹公制粗牙螺纹公制细牙螺纹规格精度max min 规格精度max min 2-56UNC RH4 2.02 1.96M1.0 0.25RH40.920.90最大最小最大最小最大最小3-48RH4 2.32 2.25M1.1 0.25RH4 1.02 1.00螺丝牙外径M1.0 0.250.750.7850.729M7.0 0.506.50 6.550 6.4004-40RH5 2.60 2.52M1.2 0.25RH4 1.12 1.10No.0-80（1.524） 1.25 1.305 1.182M1.1 0.250.850.8850.829M8.0 1.007.007.153 6.9175-40RH5 2.93 2.86M1.4 0.30RH4 1.294 1.270No.1-72（1.854） 1.55 1.612 1.474M1.2 0.250.950.9850.929M8.0 0.757.307.3787.1886-32RH5 3.17 3.09M1.6 0.35RH4 1.45 1.40No.2-64（2.184） 1.85 1.912 1.756M1.4 0.30 1.10 1.142 1.075M8.0 0.507.507.5207.4008-32RH6 3.83 3.75M1.7 0.35RH4 1.58 1.54No.3-56（2.515） 2.10 2.197 2.025M1.6 0.35 1.25 1.321 1.221M9.0 1.008.008.1537.91710-24RH6 4.35 4.26M2.0 0.40RH4 1.85 1.81No.4-48（2.845） 2.40 2.458 2.271M1.7 0.35 1.35 1.421 1.321M9.0 0.758.308.3788.18812-24RH6 5.01 4.92M2.3 0.40RH4 2.15 2.11No.5-44（3.175） 2.70 2.740 2.551M1.8 0.35 1.45 1.521 1.421M10.0 1.258.808.9128.6471/4-20RH6 5.76 5.66M2.5 0.45RH4 2.33 2.28No.6-40（3.505） 2.90 3.022 2.820M2.0 0.40 1.60 1.679 1.567M10.0 1.009.009.1538.9175/16-18RH77.297.18M2.6 0.45RH4 2.43 2.38No.8-36（4.166） 3.50 3.606 3.404M2.2 0.45 1.75 1.838 1.713M10.0 0.759.309.3789.1883/8-16RH78.788.66M3.0 0.50RH5 2.81 2.76No.10-32（4.826） 4.10 4.165 3.963M2.3 0.40 1.90 1.979 1.867M10.0 0.509.509.5209.4007/16-14RH710.2510.11M3.5 0.60RH5 3.26 3.20No.12-28（5.486） 4.60 4.724 4.496M2.5 0.45 2.10 2.138 2.013M11.0 1.0010.0010.1539.9171/2-13RH811.7811.62M4.0 0.70RH6 3.70 3.651/4-28 5.50 5.588 5.360M2.6 0.45 2.20 2.238 2.113M11.0 0.7510.3010.37810.1889/16-12RH1013.2713.14M5.0 0.80RH6 4.66 4.595/16-24 6.907.035 6.782M3.0 0.50 2.50 2.599 2.459M12.0 1.5010.5010.67610.3765/8-11RH1114.7614.62M6.0 1.00RH7 5.57 5.483/8-248.508.6368.382M3.5 0.60 2.90 3.010 2.850M12.0 1.2510.8010.91210.6473/4-10RH1217.8817.67M7.0 1.00RH7 6.57 6.487/16-209.9010.0339.729M4.0 0.70 3.30 3.422 3.242M12.0 1.0011.0011.15310.9177/8-9RH1220.8520.68M8.0 1.00RH77.577.481/2-2011.5011.60711.329M4.5 0.75 3.80 3.878 3.688M12.0 0.5011.5011.52011.4001-8RH1323.8423.65M8.0 1.25RH77.417.349/16-1812.9013.08112.751M5.0 0.80 4.20 4.334 4.134M14.0 1.5012.5012.67612.376M10 1.00RH79.579.485/8-1814.5014.68114.351M6.0 1.00 5.00 5.153 4.917M14.0 1.0013.0013.15312.917美制（细）挤牙丝攻钻孔径M10 1.25RH79.419.343/4-1617.5017.67817.323M7.0 1.00 6.00 6.153 5.917M15.0 1.5013.5013.67613.376规格精度maxmin M10 1.50RH79.289.187/8-1420.5020.67520.270M8.0 1.25 6.80 6.912 6.647M15.0 1.0014.0014.15313.9172-64UNF RH3 2.04 1.98M12 1.00RH711.5711.181-1223.3023.57123.114M9.0 1.257.807.9127.647M16.0 1.5014.5014.67614.3763-56RH4 2.35 2.29M12 1.25RH711.4111.051-1/8-1226.5026.74626.289M10.0 1.508.508.6768.376M16.0 1.0015.0015.15314.9174-48RH4 2.64 2.57M12 1.50RH711.2811.481-1/4-1229.6029.92129.464M11.0 1.509.509.6769.376M17.0 1.5015.5015.67615.3765-44RH4 2.95 2.88M12 1.75RH811.1511.341-3/8-1232.8033.09632.639M12.0 1.7510.3010.44110.106M17.0 1.0016.0016.15315.9176-40RH5 3.26 3.19M14 1.50RH913.3013.211-1/2-1236.0036.27135.814M14.0 2.0012.0012.21011.835M18.0 2.0016.0016.21015.8358-36RH5 3.88 3.80M14 2.00RH1013.0412.92M16.0 2.0014.0014.21013.835M18.0 1.5016.5016.67616.37610-32RH5 4.48 4.41M16 1.50RH915.3015.21M18.0 2.5015.5015.74415.294M18.0 1.0017.0017.15316.91712-28RH5 5.08 5.00M16 2.00RH1015.0414.92M20.0 2.5017.5017.74417.294M20.0 2.0018.0018.21017.8351/4-28RH5 5.93 5.86M18 1.5RH1017.3117.22M22.0 2.5019.5019.74419.294M20.0 1.5018.5018.67618.3765/16-24RH67.467.38M18 2.5RH1116.7816.63M24.0 3.0021.0021.25220.752M20.0 1.0019.0019.15318.9173/8-24RH69.058.96M20 1.5RH1019.3119.22M27.0 3.0024.0024.25223.752M22.0 2.0020.0020.21019.8357/16-20RH710.5410.44M20 2.5RH1118.7818.63M30.0 3.5026.5026.77126.211M22.0 1.5020.5020.67620.3761/2-20RH712.1212.02M33.0 3.5029.5029.77129.211M22.0 1.0021.0021.15320.9179/16-18RH913.6613.55最大最小M36.0 4.0032.0032.27031.670M24.0 2.0022.0022.21021.8355/8-18RH915.2515.14螺丝牙外径M39.0 4.0035.0035.27034.670M24.0 1.5022.5022.67622.3763/4-16RH1018.3218.22 1. 外径-牙距¡0.45=下孔＜D-P¡0.45＞No.1-64（1.854） 1.55 1.582 1.425M24.0 1.0023.0023.15322.9177/8-14RH1121.3821.27 2. Dn=D-0.2P-0.00403?P?f1+0.0127?nNo.2-56（2.184） 1.80 1.871 1.695M25.0 2.0023.0023.21022.8351-12RH1224.4124.28＜例＞M3¡0.5RH6 2级母螺纹攻牙 咬合率90%No.3-48（2.515） 2.10 2.146 1.941M25.0 1.5023.5023.67623.376Dn=3-0.2¡0.5-0.00403¡0.5¡90+0.0127¡6No.4-40（2.845） 2.30 2.385 2.157最大最小M25.0 1.0024.0024.15323.917 =2.80No.5-40（3.175） 2.60 2.697 2.487M1.0 0.200.800.8210.783M26.0 1.5024.5024.67624.376山数山数Dn=下孔径 D=基准外径 P=牙距No.6-32（3.505） 2.80 2.895 2.642M1.1 0.200.900.9210.883M27.0 2.0025.0025.21024.835每25.4mm 每25.4mm f1=咬合率 n=RH 精度No.8-32（4.166） 3.40 3.530 3.302M1.2 0.20 1.00 1.0210.983M27.0 1.5025.5025.67625.3761000.254012 2.1167No.10-24（4.826） 3.90 3.962 3.683M1.4 0.20 1.20 1.221 1.183M27.0 1.0026.0026.15325.917800.317511 2.3091No.12-24（5.486） 4.50 4.597 4.344M1.6 0.20 1.40 1.421 1.383M28.0 2.0026.0026.21025.835720.352810 2.54001/4-20 5.10 5.257 4.979M1.7 0.20 1.50 1.521 1.483M28.0 1.5026.5026.67626.376640.39699 2.82225/16-18 6.60 6.731 6.401M1.8 0.20 1.60 1.621 1.583M28.0 1.0027.0027.15326.917600.42338 3.17503/8-168.008.1537.798M2.0 0.25 1.75 1.785 1.729M30.0 3.0027.0027.25226.752560.45367 3.62867/16-149.409.5509.144M2.2 0.25 1.95 1.985 1.929M30.0 2.0028.0028.21027.835480.52926 4.23331/2-1310.9011.02310.592M2.3 0.25 2.05 2.061 2.001M30.0 1.5028.5028.67628.376440.57735 5.0800规格吋mm 9/16-1212.2012.46611.989M2.5 0.35 2.20 2.221 2.121M30.0 1.0029.0029.15328.917400.63504 1/2 5.6444 No. 00.0600 1.5245/8-1113.6013.86813.386M2.6 0.35 2.20 2.246 2.186M32.0 2.0030.0030.21029.835360.70564 6.350010.0730 1.8543/4-1016.6016.84016.307M3.0 0.35 2.70 2.721 2.621M32.0 1.5030.5030.67630.376320.79383 1/27.257120.0860 2.1847/8-919.6019.76119.177M3.5 0.35 3.20 3.221 3.121M33.0 3.0030.0030.25229.752280.90713 1/47.815430.0990 2.5151-822.3022.60621.971M4.0 0.40 3.50 3.599 3.459M33.0 2.0031.0031.21030.83524 1.058338.466740.1120 2.8451-1/8-725.0025.34924.638M4.5 0.40 4.00 4.099 3.959M33.0 1.5031.5031.67631.37620 1.27002 7/88.834850.1250 3.1751-1/4-728.2028.52427.813M5.0 0.40 4.50 4.599 4.459M35.0 1.5033.5033.67633.37618 1.41112 3/49.236460.1380 3.5051-3/8-630.8031.11530.353M5.5 0.40 5.00 5.099 4.959M36.0 3.0033.0033.25232.75216 1.58752 5/89.676280.1640 4.1661-1/2-634.0034.29033.528M6.0 0.75 5.30 5.378 5.188M36.0 2.0034.0034.21033.83514 1.81432 1/210.1600100.1900 4.8261-3/4-539.5039.82738.964M6.0 0.50 5.50 5.550 5.400M36.0 1.5034.5034.67634.376131.9538120.21605.4862-4-1/245.2045.59344.679M7.0 0.756.306.3786.188美制螺丝外径公厘（mm ）换算表美制粗牙螺纹公制细牙螺纹规格标准径2级牙钻孔径NRT 下孔径计算式规格标准径2级牙钻孔径规格标准径2级牙钻孔径2级牙钻孔径规格标准径2级牙钻孔径牙距mm 牙距mm 规格标准径山数节距换算表。
螺丝攻牙钻孔对照表
美 制 细 螺 纹
规格 （UNF）
普通牙外经 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）
标准经 13.50 14.00 14.50 15.00 15.50 16.00 16.00 16.50 17.00 18.00 18.50 19.00 20.00 20.50 21.00 22.00 22.50 23.00 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.00 26.50 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.50 33.00 34.00 34.50
1/4--28 5/16--24 3/8--24 7/16--20 1/2--20 9/16--18 5/8--18 3/4--16 7/8--14 1--12 1-1/8-12 1-1/4-12 1-3/8-12 1-1/2-12
英 制 管 螺 纹
标准经 规格 PT1/16-28 PT1/8-28 PT1/4-19 PT3/8-19 PT1/2-14 PT3/4-14 PT1--11 PT1-1/4-11 PT1-1/2-11 PT2--11
标准经 0.80 0.90 1.00 1.20 1.40 1.45 1.60 1.75 1.95 2.05 2.20 2.20 2.70 3.20 3.50 4.00 4.50 5.00 5.30 5.50 6.30 6.50 7.00 7.30 7.50 8.00 8.30 8.80 9.00 9.30 9.50 10.00 10.30 10.50 10.80 11.00 11.50 12.50 13.00
螺丝攻牙钻孔径和滚丝径对照表
螺丝攻牙钻孔径和滚丝径对照表螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.25 0.75 0.785 0.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.25 0.85 0.885 0.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.25 0.95 0.985 0.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.867 1/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.013 5/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.113 3/8-16 8.00 8.153 7.798M3.0×0.5 2.50 2.599 2.459 7/16-14 9.40 9.55 9.144M3.0×0.6 2.40 2.440 2.280 1/2-13 10.80 11.023 10.592M3.5×0.6 2.90 3.010 2.850 9/16-12 12.20 12.446 11.989M4.0×0.7 3.30 3.422 3.242 5/8-11 13.60 12.868 13.386M4.0×0.75 3.25 3.326 3.106 3/4-10 16.50 18.840 16.307M4.5×0.75 3.80 3.878 3.688 7/8-9 19.50 19.761 19.177M5.0×0.8 4.20 4.334 4.134 1 22.2022.606 21.971M5.0×0.9 4.10 4.170 3.930 1-1/8-7 25.00 25.349 24.638M6.0×1.0 5.00 5.153 4.917 1-1/4-7 28.20 28.524 27.813M7.0×1.0 6.00 6.153 5.917 1-3/8-6 30.80 31.115 30.353M8.0×1.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528M9.0×1.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964M10×1.5 8.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679M11×1.5 9.50 9.676 9.376M12×1.75 10.30 10.441 10.106M14×2.0 12.00 12.210 11.835M16×2.0 14.00 14.210 13.835M18×2.5 15.50 15.744 15.294M20×2.5 17.50 17.744 17.294M22×2.5 19.50 19.744 19.294M24×3.0 21.00 21.252 20.752M27×3.0 24.00 24.252 23.752M30×3.5 26.50 26.771 26.211螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.2 0.80 0.821 0.783 NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.021 0.983 NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383 NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846) 4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.121 1/4-28 5.50 5.588 5.360M2.6×0.35 2.20 2.246 2.186 5/16-24 6.90 7.035 6.782M3.0×0.35 2.70 2.721 2.621 3/8-24 8.50 8.636 8.382M3.5×0.35 3.20 3.221 3.121 7/16-20 9.90 10.033 9.729M4.0×0.5 3.50 3.599 3.459 1/2-20 11.50 11.607 11.329M4.5×0.5 4.00 4.099 3.959 9/16-18 12.90 13.081 12.751M5.0×0.5 4.50 4.599 4.459 5/8-18 14.50 14.681 14.351M5.5×0.5 5.00 5.099 4.959 3/4-16 17.50 17.678 17.323M6.0×0.75 5.30 5.378 5.188 7/8-14 20.50 20.675 20.270M6.0×0.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114M7.0×0.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289M7.0×0.5 6.50 6.550 6.400 1-1/4-1229.50 29.921 29.464M8.0×1.0 7.00 7.153 6.917 1-3/8-12 32.80 33.096 32.639M8.0×0.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814M8.0×0.5 7.50 7.520 7.400M9.0×1.0 8.00 8.153 7.917M9.0×0.75 8.30 8.378 8.188M10×1.25 8.80 8.912 8.647M10×1.0 9.00 9.153 8.917M10×0.75 9.30 9.378 9.188M10×0.5 9.50 9.520 9.400M11×1.0 10.00 10.153 9.917M11×0.75 10.30 10.378 10.188M12×1.5 10.50 10.676 10.376M12×1.25 10.80 10.912 10.647M12×0.5 11.50 11.520 11.400 M14×1.5 12.50 12.676 12.376 M14×1.0 13.00 13.153 12.917 M15×1.5 13.50 13.676 13.376 M15×1.0 14.00 14.153 13.917 M16×1.5 14.50 14.676 14.376 M16×1.0 15.00 15.153 14.917 M17×1.5 15.50 15.676 15.376 M17×1.0 16.00 16.153 15.917 M18×2.0 16.00 16.210 15.835 M18×1.5 16.50 16.676 16.376 M18×1.0 17.00 17.153 16.917 M20×2.0 18.00 18.210 17.835 M20×1.5 18.50 18.676 18.376 M20×1.0 19.00 19.153 18.917 M22×2.0 20.00 20.210 19.835 M22×1.5 20.50 20.676 20.376 M22×1.0 21.00 21.153 20.917M24×1.5 22.50 22.676 22.376 M24×1.0 23.00 23.153 22.917 M25×2.0 23.00 23.210 22.835 M25×1.5 23.50 23.676 23.376 M25×1.0 24.00 24.153 23.917 M26×1.5 24.50 24.676 24.376 M27×2.0 25.00 25.210 24.835 M27×1.5 25.50 25.676 25.376 M27×1.0 26.00 26.153 25.917 M28×2.0 26.00 26.210 25.835 M28×1.5 26.50 26.676 26.376 M28×1.0 27.00 27.153 26.917 M30×3.0 27.00 27.252 26.752 M30×2.0 28.00 28.210 27.835 M30×1.5 28.50 28.676 28.376 M30×1.0 29.00 29.153 28.917 M32×2.0 30.00 30.210 29.835 M32×1.5 30.50 30.676 30.376M33×3.0 30.00 30.252 29.752M33×2.0 31.00 31.210 30.835M33×1.5 31.50 31.676 31.376M35×1.5 33.50 33.676 33.376M36×3.0 33.00 33.252 32.752M36×2.0 34.00 34.210 33.835M36×1.5 34.50 34.676 34.376螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格（UNC）精度等级G4-G6 G7-G8 G9 G4-G6 G7-G8 G9M1.0×0.25 0.86 0.88 －NO.2-56UNC 1.94 －－M1.1×0.25 0.96 0.98 －NO.3-48 2.23 －－M1.2×0.25 1.06 1.08 －NO.4-40 2.50 －－M1.4×0.3 1.24 1.25 －NO.5-40 2.83 －－M1.6×0.35 1.41 1.43 －NO.6-32 3.07 －－－M1.8×0.35 1.61 1.63 －NO.10-24 4.24 4.3 －M2.0×0.4 1.78 1.80 －NO.12-24 4.90 4.96 －M2.2×0.45 1.95 1.98 －1/4-20 －5.72 －M2.3×0.4 2.08 2.10 －5/16-18 －7.24 －M2.5×0.45 2.25 2.28 －3/8-16 －8.74 8.81 M2.6×0.45 2.35 2.38 －7/16-14 －10.20 10.30M3.0×0.5 2.73 2.75 －1/2-13 －11.27 11.82M3.5×0.6 3.17 3.20 －NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69 NO.3-56 2.27 －－M5.0×0.8 4.56 4.60 4.64 NO.4-48 2.56 －－－M7.0×1.0 6.45 6.50 6.55 NO.6-40 3.16 －－M8.0×1.25 7.31 7.38 7.44 NO.8-36 3.78 －－M10×1.5 9.18 9.25 9.32 NO.10-32 4.394.43 －M10×1.25 9.31 9.38 9.44 NO.12-28 4.99 5.04 －M12×1.75 11.04 11.12 11.21 1/4-28 5.85 5.90 －M12×1.25 11.31 11.38 11.44 5/16-24 7.36 7.41 －3/8-24 －9.00 －7/16-20 －10.48 10.541/2-20 －12.07 12.13美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小NO.12-32 4.70 4.826 4.623 2BA 4.0-4.2 1/4 -32 5.60 5.690 5.486 3BA5/16 -32 7.10 7.264 7.087 4BA 3.0-3.2 3/8 -32 8.70 8.865 8.661 5BA 2.7-2.8 7/16 -28 10.20 10.338 10.135 6BA 2.4-2.51/2 -28 11.80 11.938 11.7099/16 -24 13.20 13.386 13.1325/8 -24 14.80 14.986 14.7323/4 -20 17.80 17.958 17.6787/8 -20 21.00 21.133 20.8531 -20 24.00 24.308 24.028螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF) 钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 - 40 2.65 2.60 M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20 M3.0×0.6 2.56-2.53 SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70 M3.5×0.6 3.06-3.03 SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00 M4.0×0.7 3.49-3.45 SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50 M4.0×0.75 3.45-3.41 SM3/16-32 4.205-4.155W 3/8 - 16 8.00 7.90 M4.5×0.75 3.96-3.92 SM3/16-28 4.143-4.093W 7/16 - 14 9.40 9.30 M5.0×0.8 4.43-4.38 SM7/32-32 5.003-4.955W 1/2 - 12 10.70 10.50 M5.0×0.9 4.36-4.31 SM15/64-28 5.325-5.570W 9/16 - 12 12.30 12.00 M6.0×1.05.30-5.25 SM1/4-40 5.890-5.735W 5/8 - 11 13.70 13.50 M7.0×1.0 6.30-6.25 SM1/4-28 5.721-5.366W 3/4 - 10 16.70 16.50 M8.0×1.0 7.28-7.23 SM9/32-28 6.508-6.648W 7/8 - 9 19.50 19.30 M8.0×1.25 7.12-7.07 SM11/32-28 8.092-8.432W1 - 8 22.40 22.00 SM3/8-288.880-8.015W 1-1/8 - 7 25.00 24.80 SM7/16-28 10.466-10.401W 1 - 1/4 - 7 28.30 28.00 SM7/16-16 10.037-9.967SM1/2-20 11.819-11.749SM9/26-20 13.400-13.425英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径规格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPT NPS 使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490 PT 1/16 - 28 6.10 6.20 6.244 6.384 1/16 - 27 6.10 6.25 6.35PS 1/8 - 28 8.50 8.637 8.495 PT 1/8 - 28 8.10 8.20 8.249 8.388 1/8 - 27 8.33 8.43 8.74PS 1/4 - 19 11.40 11.549 11.341 PT 1/4 - 19 10.70 11.00 10.962 11.174 1/4 - 18 10.72 11.13 11.13PS 3/8 - 19 15.00 15.054 14.846 PT 3/8 - 19 14.20 14.50 14.448 14.658 3/8 - 18 14.27 14.27 14.68PS 1/2 - 14 18.50 18.773 18.489 PT 1/2 - 14 17.60 18.00 17.979 18.263 1/2 - 14 17.48 17.86 18.26PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.00 23.50 23.378 23.663 3/4 - 14 22.63 23.01 23.42PS 1 - 11 30.20 30.471 30.111 PT 1- 11 29.00 29.50 29.459 29.822 1 - 11-1/2 28.58 28.98 29.36PS 1-1/4 - 11 38.80 39.132 38.772 PT 1-1/4 - 11 37.50 38.00 37.976 38.3391-1/4-11-1/2 37.31 37.69 38.10PS 1-1/2 - 11 44.80 45.025 44.665 PT 1-1/2 - 11 43.40 44.00 43.869 44.2321-1/2-11-1/2 43.66 44.04 44.45PS 2 - 11 56.50 56.836 56.476 PT 2 - 11 54.90 55.50 55.412 55.844 2 - 11 - 1/2 55.58 55.96 56.36。
螺丝攻牙孔径对照表
螺丝攻牙钻孔径对照表美制（粗）挤牙丝攻钻孔径公制挤牙丝攻钻孔径美制细牙螺纹公制细牙螺纹规格精度max min 规格精度max min 2-56UNC RH4 2.02 1.96M1.0 0.25RH40.920.90最大最小最大最小3-48RH4 2.32 2.25M1.1 0.25RH4 1.02 1.00螺丝牙外径M7.0 0.506.50 6.550 6.4004-40RH5 2.60 2.52M1.2 0.25RH4 1.12 1.10No.0-80（1.524） 1.25 1.305 1.182M8.0 1.007.007.153 6.9175-40RH5 2.93 2.86M1.4 0.30RH4 1.294 1.270No.1-72（1.854） 1.55 1.612 1.474M8.0 0.757.307.3787.1886-32RH5 3.17 3.09M1.6 0.35RH4 1.45 1.40No.2-64（2.184） 1.85 1.912 1.756M8.0 0.507.507.5207.4008-32RH6 3.83 3.75M1.7 0.35RH4 1.58 1.54No.3-56（2.515） 2.10 2.197 2.025M9.0 1.008.008.1537.91710-24RH6 4.35 4.26M2.0 0.40RH4 1.85 1.81No.4-48（2.845） 2.40 2.458 2.271M9.0 0.758.308.3788.18812-24RH6 5.01 4.92M2.3 0.40RH4 2.15 2.11No.5-44（3.175） 2.70 2.740 2.551M10.0 1.258.808.9128.6471/4-20RH6 5.76 5.66M2.5 0.45RH4 2.33 2.28No.6-40（3.505） 2.90 3.022 2.820M10.0 1.009.009.1538.9175/16-18RH77.297.18M2.6 0.45RH4 2.43 2.38No.8-36（4.166） 3.50 3.606 3.404M10.0 0.759.309.3789.1883/8-16RH78.788.66M3.0 0.50RH5 2.81 2.76No.10-32（4.826） 4.10 4.165 3.963M10.0 0.509.509.5209.4007/16-14RH710.2510.11M3.5 0.60RH5 3.26 3.20No.12-28（5.486） 4.60 4.724 4.496M11.0 1.0010.0010.1539.9171/2-13RH811.7811.62M4.0 0.70RH6 3.70 3.651/4-28 5.50 5.588 5.360M11.0 0.7510.3010.37810.1889/16-12RH1013.2713.14M5.0 0.80RH6 4.66 4.595/16-24 6.907.035 6.782M12.0 1.5010.5010.67610.3765/8-11RH1114.7614.62M6.0 1.00RH7 5.57 5.483/8-248.508.6368.382M12.0 1.2510.8010.91210.6473/4-10RH1217.8817.67M7.0 1.00RH7 6.57 6.487/16-209.9010.0339.729M12.0 1.0011.0011.15310.9177/8-9RH1220.8520.68M8.0 1.00RH77.577.481/2-2011.5011.60711.329M12.0 0.5011.5011.52011.4001-8RH1323.8423.65M8.0 1.25RH77.417.349/16-1812.9013.08112.751M14.0 1.5012.5012.67612.376M10 1.00RH79.579.485/8-1814.5014.68114.351M14.0 1.0013.0013.15312.917美制（细）挤牙丝攻钻孔径M10 1.25RH79.419.343/4-1617.5017.67817.323M15.0 1.5013.5013.67613.376规格精度maxmin M10 1.50RH79.289.187/8-1420.5020.67520.270M15.0 1.0014.0014.15313.9172-64UNF RH3 2.04 1.98M12 1.00RH711.5711.181-1223.3023.57123.114M16.0 1.5014.5014.67614.3763-56RH4 2.35 2.29M12 1.25RH711.4111.051-1/8-1226.5026.74626.289M16.0 1.0015.0015.15314.9174-48RH4 2.64 2.57M12 1.50RH711.2811.481-1/4-1229.6029.92129.464M17.0 1.5015.5015.67615.3765-44RH4 2.95 2.88M12 1.75RH811.1511.341-3/8-1232.8033.09632.639M17.0 1.0016.0016.15315.9176-40RH5 3.26 3.19M14 1.50RH913.3013.211-1/2-1236.0036.27135.814M18.0 2.0016.0016.21015.8358-36RH5 3.88 3.80M14 2.00RH1013.0412.92M18.0 1.5016.5016.67616.37610-32RH5 4.48 4.41M16 1.50RH915.3015.21M18.0 1.0017.0017.15316.91712-28RH5 5.08 5.00M16 2.00RH1015.0414.92M20.0 2.0018.0018.21017.8351/4-28RH5 5.93 5.86M18 1.5RH1017.3117.22M20.0 1.5018.5018.67618.3765/16-24RH67.467.38M18 2.5RH1116.7816.63M20.0 1.0019.0019.15318.9173/8-24RH69.058.96M20 1.5RH1019.3119.22M22.0 2.0020.0020.21019.8357/16-20RH710.5410.44M20 2.5RH1118.7818.63M22.0 1.5020.5020.67620.3761/2-20RH712.1212.02M22.0 1.0021.0021.15320.9179/16-18RH913.6613.55最大最小M24.0 2.0022.0022.21021.8355/8-18RH915.2515.14螺丝牙外径M24.0 1.5022.5022.67622.3763/4-16RH1018.3218.22 1. 外径-牙距¡0.45=下孔＜D-P¡0.45＞No.1-64（1.854） 1.55 1.582 1.425M24.0 1.0023.0023.15322.9177/8-14RH1121.3821.27 2. Dn=D-0.2P-0.00403?P?f1+0.0127?nNo.2-56（2.184） 1.80 1.871 1.695M25.0 2.0023.0023.21022.8351-12RH1224.4124.28＜例＞M3¡0.5RH6 2级母螺纹攻牙 咬合率90%No.3-48（2.515） 2.10 2.146 1.941M25.0 1.5023.5023.67623.376Dn=3-0.2¡0.5-0.00403¡0.5¡90+0.0127¡6No.4-40（2.845） 2.30 2.385 2.157M25.0 1.0024.0024.15323.917 =2.80No.5-40（3.175） 2.60 2.697 2.487M26.0 1.5024.5024.67624.376山数山数Dn=下孔径 D=基准外径 P=牙距No.6-32（3.505） 2.80 2.895 2.642M27.0 2.0025.0025.21024.835每25.4mm 每25.4mm f1=咬合率 n=RH 精度No.8-32（4.166） 3.40 3.530 3.302M27.0 1.5025.5025.67625.3761000.254012 2.1167No.10-24（4.826） 3.90 3.962 3.683M27.0 1.0026.0026.15325.917800.317511 2.3091No.12-24（5.486） 4.50 4.597 4.344M28.0 2.0026.0026.21025.835720.352810 2.54001/4-20 5.10 5.257 4.979M28.0 1.5026.5026.67626.376640.39699 2.82225/16-18 6.60 6.731 6.401M28.0 1.0027.0027.15326.917600.42338 3.17503/8-168.008.1537.798M30.0 3.0027.0027.25226.752560.45367 3.62867/16-149.409.5509.144M30.0 2.0028.0028.21027.835480.52926 4.23331/2-1310.9011.02310.592M30.0 1.5028.5028.67628.376440.57735 5.0800规格吋mm 9/16-1212.2012.46611.989M30.0 1.0029.0029.15328.917400.63504 1/2 5.6444 No. 00.0600 1.5245/8-1113.6013.86813.386M32.0 2.0030.0030.21029.835360.70564 6.350010.0730 1.8543/4-1016.6016.84016.307M32.0 1.5030.5030.67630.376320.79383 1/27.257120.0860 2.1847/8-919.6019.76119.177M33.0 3.0030.0030.25229.752280.90713 1/47.815430.0990 2.5151-822.3022.60621.971M33.0 2.0031.0031.21030.83524 1.058338.466740.1120 2.8451-1/8-725.0025.34924.638M33.0 1.5031.5031.67631.37620 1.27002 7/88.834850.1250 3.1751-1/4-728.2028.52427.813M35.0 1.5033.5033.67633.37618 1.41112 3/49.236460.1380 3.5051-3/8-630.8031.11530.353M36.0 3.0033.0033.25232.75216 1.58752 5/89.676280.1640 4.1661-1/2-634.0034.29033.528M36.0 2.0034.0034.21033.83514 1.81432 1/210.1600100.1900 4.8261-3/4-539.5039.82738.964M36.0 1.5034.5034.67634.376131.9538120.21605.4862-4-1/245.2045.59344.679美制螺丝外径公厘（mm ）换算表美制粗牙螺纹规格标准径2级牙钻孔径NRT 下孔径计算式2级牙钻孔径规格标准径2级牙钻孔径牙距mm 牙距mm 规格标准径山数节距换算表。
各种螺纹详细参数和钻孔直径对照表
螺纹下孑L径表JIS B °2°9 J982（單位：mm）
以下等級:、以上等級:⑵基於標準
單位
螺纹下孔径表
公制細牙螺纹JIS B 0211-1982 (單位:mm )
註⑴等級：6H
⑵基於JIS B 0211-1982標準 螺纹下孔径表
螺纹下孔径表
美制細牙螺纹
（單位：m m ）
美制粗牙螺纹
（單位：m m ）
螺纹下孔径表
英制粗牙螺纹（單位：m m ）
螺纹下孔径表
英制管用螺纹(單位：mm)
螺纹下孔径表
英制平行管用螺纹PF(G) (劉立：mm)
使用粗線左側數據作為攻絲前的底孔直径，可加工符合
的級或級的內螺纹小径。
美制斜行管用螺纹(NPT7NPS)
(單位：mm)
上述钻头直径來源於美制管用螺纹 標準
螺纹下孔径表
美制管用耐密斜行螺纹(N PTF7NPSF)
(單位：mm)
上述钻头直径來源於美制管用耐密斜行螺纹ANSI B1.20.3 —1957 Dryseal Pipe Threads (Inch)標準
璽纹下孔径表（無屑絲攻用）
美制細牙螺纹（NRT）（單位：
英制管用平行螺纹（NRT）（單位：mm ）
螺纹下孔径表（無屑絲攻用）
公制螺纹（HRT）（單位：mm ）
螺纹下孔径表（護套螺纹用）
公制粗牙螺纹HL-NRT （單位：mm ）
璽纹下孔径表（護套螺纹用）
公制粗牙螺纹（單位：
螺纹下孔径表（護套螺纹用）
（單位：
美制細牙螺纹
（單位：
各種換算表
美制螺絲外徑公厘(mm)換算表
山數節距換算表 管用螺絲基準寸法(mm)
0.0730 1.854。
全系列螺纹钻孔直径对照表
螺纹钻孔直径对照表公制螺纹公制细牙螺纹55°圆柱内螺纹（Rp)55°圆锥内螺纹（Rc)55°非密封圆柱内螺纹（G)规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小M10.750.7850.729M1*0.20.80.8210.7831/16-28 6.5 6.632 6.491/16-28 6.3 6.384 6.2441/16-28 6.7 6.843 6.561 M2 1.6 1.679 1.567M2*0.25 1.725 1.785 1.7291/8-288.58.6378.4951/8-288.38.3888.2491/8-288.78.8488.566 M3 2.5 2.599 2.459M3*0.35 2.7 2.721 2.6211/4-1911.411.54911.3411/4-191111.17410.9621/4-1911.711.8911.445 M4 3.3 3.422 3.242M4*0.5 3.5 3.599 3.4593/8-1914.915.04514.8463/8-1914.514.65814.4483/8-1915.215.39514.95 M5 4.2 4.334 4.134M5*0.5 4.5 4.599 4.4591/2-1418.618.77318.4891/2-1418.118.26317.9791/2-141919.17218.631 M65 5.153 4.917M6*0.75 5.3 5.378 5.1883/4-142424.25923.9753/4-1423.523.66323.3785/8-142121.12820.587 M76 6.153 5.917M7*0.75 6.3 6.378 6.1881-1130.230.47230.111-1129.629.82229.4593/4-1424.524.65824.117 M8 6.8 6.912 6.647M8*177.153 6.91711/4-1138.839.13338.77111/4-1138.238.33937.9767/8-1428.228.41827.877 M108.58.6768.376M8*0.757.37.3787.18811/2-1144.745.02644.66411/2-114444.23243.8691-1130.630.93130.291 M1210.2510.44110.106M10*1.258.88.9128.6472-1156.556.83756.4752-1155.655.84455.41211/8-1135.235.57934.939 M141212.2111.835M10*199.1538.91711/4-1139.239.59238.952 M161414.2113.835M10*0.759.39.3789.18811/2-114545.48544.845 M1815.515.74415.294M12*1.510.510.67610.37613/4-115151.42850.788 M2017.517.74417.294M12*1.2510.810.91210.6472-115757.29656.656 M2219.519.74419.294M12*11111.15310.917M242121.25220.752M14*1.512.512.67612.376M272424.25223.752M14*1.2512.812.91212.647M3026.526.77126.211M14*11313.15312.917M3329.529.77129.211M16*1.514.514.67614.376M363232.2731.67M16*11515.15314.917M393535.2734.67M18*21616.2115.835M18*1.516.516.67616.376M18*11717.15316.917M20*21818.2117.835M20*1.518.518.67618.376M20*11919.15318.917M22*22020.2119.835M22*1.520.520.67620.376M22*12121.15320.917M24*22222.2121.835M24*1.522.522.67622.376M24*12323.15322.917M27*22525.2124.835M27*1.525.525.67625.376M27*12626.15325.917M30*32727.25226.752M30*22828.2127.835M30*1.528.528.67628.376M30*12929.15328.917M33*33030.25229.752M33*23131.2130.835M33*1.531.531.67631.376M36*33333.25232.752M36*23434.2133.835M36*1.534.534.67634.376M39**33636.25235.752M39*23737.2136.835M39*1.537.537.67637.376螺纹钻孔直径对照表60°圆锥内螺纹（NPT)60°圆柱内螺纹（NPSC)统一螺纹（UNF）统一螺纹（UNC）统一螺纹（UNEF）规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小1/16-27 6.135 6.223 6.0461/8-278.488.88.636N0.0-80 1.25 1.305 1.18N0.1-64 1.5 1.585 1.435N0.12-32 4.722 4.816 4.628 1/8-278.488.5688.3931/4-1811.3511.4711.227N0.1-72 1.55 1.612 1.473N0.2-56 1.78 1.872 1.6941/4-32 5.585 5.679 5.491 1/4-1810.99611.12810.8643/8-1814.7714.914.656N0.2-64 1.85 1.912 1.755N0.3-48 2.14 2.04 1.945/16-327.1727.2677.079 3/8-1814.41614.54814.2841/2-1417.81318.16117.642N0.3-56 2.1 2.197 2.024N0.4-40 2.27 2.385 2.1563/8-328.768.8548.666 1/2-1417.81317.98317.6423/4-1423.12723.49523.297N0.4-48 2.4 2.458 2.271N0.5-40 2.593 2.698 2.4877/16-2810.23710.34310.13 3/4-1423.12723.29722.9571-11.529.05929.48929.266N0.5-44 2.7 2.74 2.551N0.6-32 2.77 2.899 2.651/2-2811.82411.9311.717 1-11.529.05929.26628.85111/4-11.537.78438.25237.991N0.6-40 2.9 3.022 2.817N0.8-32 3.418 3.528 3.3079/16-2413.26513.38813.142 11/4-11.537.78437.99137.57611/2-11.543.8544.32344.06N0.8-36 3.5 3.606 3.401N0.10-24 3.814 3.949 3.685/8-2414.8514.97514.729 11/2-11.543.8544.0643.6462-11.555.8656.36356.07N0.10-32 4.1 4.165 3.967N0.12-24 4.46 4.59 4.3411/16-2416.4416.56316.317 2-11.555.8656.0755.659N0.12-28 4.6 4.724 4.5031/4-20 5.121 5.267 4.9753/4-2017.82117.96717.6751/4-28 5.5 5.588 5.3675/16-18 6.571 6.733 6.4113/16-2019.40919.55519.2635/16-24 6.97.035 6.7913/8-167.9798.1587.87/8-2020.99621.1420.853/8-248.58.6368.3797/16-149.359.559.14915/16-2022.58522.73122.4397/16-209.910.0339.7381/2-1310.79811.01310.5841-2024.17224.31824.0261/2-2011.511.60711.3269/16-1212.913.08112.76111/16-1825.62225.78425.4619/16-1812.913.08112.7615/8-1113.62213.86813.37611/8-1827.2127.37127.0495/8-1814.514.68114.3483/4-1016.56616.83216.29913/16-1828.79728.95928.6363/4-1617.517.67817.337/8-919.45819.74819.16911/4-1830.39430.55530.2337/8-1420.520.67520.261-822.2822.59821.96315/16-1831.9732.13331.811-1223.323.57123.10911/8-724.99825.34924.64813/8-1833.55933.7233.39811/8-1226.526.74626.28411/4-728.17328.52427.82317/16-1835.0735.23334.9111/4-1229.629.92129.45913/8-632.831.1230.34311/2-1836.73436.89636.57313/8-1232.833.09632.63411/2-633.90734.29533.51819/16-1838.1238.48338.1611/2-353636.27135.80913/4-539.3839.8138.9515/8-1839.90940.0739.7482-41/245.14445.59844.689111/16-1841.49741.65841.336。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
螺絲攻下孔徑對照表
公制細牙(MF)
稱呼尺寸 M1.0*0.2 M1.1*0.2 M1.2*0.2 M1.4*0.2 M1.6*0.2 M1.8*0.2 M2.0*0.25 M2.5*0.35 M3.0*0.35 M3.5*0.35 M4.0*0.5 M4.5*0.5 M5.0*0.5 M5.5*0.5 M6.0*0.75 M7.0*0.75 M8.0*1.0 M8.0*0.75 M9.0*1.0 M9.0*0.75 M10.0*1.25 M10.0*1.0 M10.0*0.75 M10.0*0.5 M11.0*1.0 M11.0*0.75 M12.0*1.5 M12.0*1.25 M12.0*1.0 M14.0*1.5 M14.0*1.0 M15.0*1.5 M15.0*1.0 M16.0*1.5 M16.0*1.0 M17.0*1.5 M17.0*1.0 M18.0*2.0 M18.0*1.5 M18.0*1.0 M20.0*2.0 M20.0*1.5 M20.0*1.0 M22.0*2.0 M22.0*1.5 下孔徑 0.80 0.90 1.00 1.20 1.40 1.60 1.75 2.20 2.70 3.20 3.50 4.00 4.50 5.00 5.30 6.30 7.00 7.30 8.00 8.30 8.80 9.00 9.30 9.50 10.00 10.30 10.50 10.80 11.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.00 16.50 17.00 18.00 18.50 19.00 20.00 20.50 2級螺紋內徑 上限 下限 0.821 0.783 0.921 0.883 1.021 0.983 1.221 1.183 1.421 1.383 1.621 1.583 1.785 1.729 2.221 2.121 2.721 2.621 3.221 3.121 3.599 3.459 4.099 3.959 4.599 4.459 5.099 4.959 5.378 5.188 6.378 6.188 7.153 6.917 7.378 7.188 8.153 7.917 8.378 8.188 8.912 8.647 9.153 8.917 9.378 9.188 9.520 9.400 10.153 9.917 10.378 10.188 10.676 10.376 10.912 10.647 11.153 10.917 12.676 12.376 13.153 12.917 13.676 13.376 14.153 13.917 14.676 14.376 15.153 14.917 15.676 15.376 16.153 15.917 16.210 15.835 16.676 16.376 17.153 16.917 18.210 17.835 18.676 18.376 19.153 18.917 20.210 19.835 20.676 20.376 22.0*1.0 M24.0*2.0 M24.0*1.5 M24.0*1.0 M25.0*2.0 M25.0*1.5 M25.0*1.0 M26.0*1.5 M27.0*2.0 M27.0*1.5 M27.0*1.0 M28.0*2.0 M28.0*1.5 M28.0*1.0 M30.0*3.0 M30.0*2.0 M30.0*1.5 M30.0*1.0 M32.0*2.0 M32.0*1.5 M33.0*3.0 M33.0*2.0 M33.0*1.5 M35.0*1.5 M36.0*3.0 M36.0*2.0 M36.0*1.5 M38.0*1.5 21.00 22.00 22.50 23.00 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.00 26.50 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.50 33.00 34.00 34.50 36.50 21.153 22.210 22.676 23.153 23.210 23.676 24.153 24.676 25.210 25.676 26.153 26.210 26.676 27.153 27.252 28.210 28.676 29.153 30.210 30.676 30.252 31.210 31.676 33.676 33.252 34.210 34.676 36.676 20.917 21.835 22.376 22.917 22.835 23.376 23.917 24.316 24.835 25.376 25.917 25.835 26.376 26.917 26.752 27.835 28.376 28.917 29.835 30.376 29.752 30.833 31.376 33.376 32.752 33.835 34.376 36.376
無屑絲攻公பைடு நூலகம்粗牙(M)
下孔徑 0.90 1.00 1.10 1.25 1.45 1.55 1.65 1.80 2.00 2.10 2.30 2.40 2.75 3.20 3.65 4.15 4.60 5.50 6.50 7.35 8.40 9.25 11.10 13.10 15.10 16.90 18.90 下孔徑 上限 0.92 1.02 1.12 1.30 1.49 1.59 1.69 1.87 2.05 2.17 2.35 2.45 2.84 3.31 3.77 4.26 4.74 5.68 6.68 7.59 8.59 9.51 11.43 13.25 15.26 17.06 19.07 下限 0.86 0.96 1.06 1.24 1.41 1.51 1.61 1.78 1.96 2.08 2.26 2.36 2.73 3.18 3.62 4.09 4.57 5.46 6.46 7.32 8.32 9.19 11.05 12.90 14.90 16.62 18.62
無屑絲攻美制粗牙(UNF)
規格 NO. 0-80 NO. 1-72 NO. 2-64 NO. 3-56 NO. 4-48 NO. 5-44 NO. 6-40 NO. 8-36 NO. 10-32 NO. 12-28 1/4-28 5/16-24 3/8-24 1/2-20 下孔徑 1.40 1.70 2.00 2.30 2.60 2.90 3.20 3.85 4.45 5.05 5.95 7.40 9.00 12.10 下孔徑 上限 1.42 1.74 2.06 2.37 2.67 2.99 3.30 3.94 4.57 5.19 6.06 7.59 9.18 12.29 下限 1.35 1.66 1.97 2.27 2.56 2.86 3.16 3.78 4.40 4.99 5.86 7.36 8.95 12.01
螺絲攻下孔徑對照表
公制粗牙(M)
稱呼尺寸 M 1.0*0.25 M 1.1*0.25 M 1.2*0.25 M 1.4*0.25 M 1.6*0.35 M 1.7*0.35 M 1.8*0.35 M 2.0*0.40 M 2.2*0.45 M 2.3*0.45 M 2.5*0.45 M 2.6*0.45 M 3.0*0.5 M 3.0*0.6 M 3.5*0.5 M 4.0*0.7 M 4.0*0.75 M 4.5*0.75 M 5.0*0.8 M 5.0*0.9 M 6.0*1.0 M 7.0*1.0 M 8.0*1.25 M 9.0*1.25 M10.0*1.5 M11.0*1.5 M12.0*1.75 M14.0*2.0 M16.0*2.0 M18.0*2.5 M20.0*2.5 M22.0*2.5 M24.0*3.0 M27.0*3.0 M30.0*3.5 M33.0*3.5 M36.0*4.0 M39.0*4.0 M42.0*4.5 M45.0*4.5 下孔徑 0.75 0.85 0.95 1.10 1.25 1.35 1.45 1.60 1.75 1.90 2.10 2.20 2.50 2.40 2.90 3.30 3.25 3.80 4.20 4.10 5.00 6.00 6.80 7.80 8.50 9.50 10.30 12.00 14.00 15.50 17.5 19.5 21.0 24.0 26.5 29.5 32.0 35.0 37.5 40.5 2級螺紋內徑 上限 下限 0.785 0.729 0.885 0.829 0.985 0.929 1.142 1.075 1.321 1.221 1.421 1.321 1.521 1.421 1.679 1.567 1.838 1.713 1.979 1.867 2.138 2.013 2.238 2.113 2.599 2.459 2.440 2.280 3.010 2.850 3.422 3.242 3.326 3.106 3.878 3.688 4.334 4.134 4.170 3.930 5.153 4.917 6.153 5.917 6.912 6.647 7.912 7.647 8.676 8.376 9.676 9.376 10.441 10.106 12.210 11.836 14.210 13.835 15.744 15.294 17.744 17.294 19.744 19.294 21.252 20.752 24.252 23.752 26.771 26.211 29.771 29.211 32.270 31.670 35.270 34.670 37.799 37.129 40.799 40.129 規格 M1*0.25 M1.1*0.25 M1.2*0.25 M1.4*0.3 M1.6*0.35 M1.7*0.35 M1.8*0.35 M2*0.4 M2.2*0.45 M2.3*0.4 M2.5*0.45 M2.6*0.45 M3*0.5 M3.5*0.6 M4*0.7 M4.5*0.75 M5*0.8 M6*1.0 M7*1.0 M8*1.25 M9*1.25 M10*1.5 M12*1.75 M14*2.0 M16*2.0 M18*2.5 M20*2.5