最全面的螺纹加工底孔径对照表
常用螺纹与底孔加工对照表
英制管
M6.0×0.5 M7.0×0.75 M7.0×0.5 M8.0×1.0 M8.0×0.75 M8.0×0.5 M9.0×1.0 M9.0×0.75 M10×1.25 M10×1.0 M10×0.75 M10×0.5 M11×1.0 M11×0.75 M12×1.5 M12×1.25 M12×1.0 M12×0.5 M14×1.5 M14×1.0 M15×1.5 M15×1.0 M16×1.5 M16×1.0 M17×1.5 M17×1.0 M18×2.0 M18×1.5 M18×1.0 M20×2.0 M20×1.5 M20×1.0 M22×2.0 M22×1.5 M22×1.0 M24×2.0 M24×1.5 M24×1.0 M25×2.0 M25×1.5 M25×1.0 M26×1.5 M27×2.0 M27×1.5 M27×1.0 M28×2.0
英制管螺纹 PS规格 标准径 (新规格Rp) 1/16-28 6.5 1/8-28 8.5 1/4-19 11.4 3/8-19 14.9 1/2-14 18.6 3/4-14 24.0 1-11 30.2 1 1/4-11 38.8 1 1/2-11 44.7 2-11 56.5 PF规格 标准径 (新规格G) 1/16-28 6.7 1/8-28 8.7 1/4-19 11.7 3/8-19 15.2 1/2-14 19.0 5/8-14 21.0 3/4-14 24.5 7/8-14 28.2 1-11 30.6 1 1/8-11 35.2 1 1/4-11 39.2 1 1/2-11 45.0 1 3/4-11 51.0 2-11 57.0 最大 6.632 8.637 11.549 15.054 18.773 24.259 30.472 39.133 45.026 56.837 最大 6.843 8.848 11.890 15.395 19.172 21.128 24.658 28.418 30.931 35.579 39.592 45.485 51.428 57.296 最小 6.490 8.495 11.341 14.846 18.489 23.975 30.110 38.771 44.664 56.475 最小 6..587 24.117 27.877 30.291 34.939 38.952 44.845 50.788 56.656
常用螺纹底孔加工速查表
常用螺纹底孔加工速查表常用螺纹攻丝前用钻头直径速查表：普通螺纹（公制）普通细牙螺纹（公制）8牙系列UN螺纹公称直径钻头直径（mm）公称直径钻头直径（mm）公称直径钻头直径（mm）M3 2.5 M8×0.75 7.2 11/8-8UN 25.41/4-8UN28.5M4 3.3 M8×1 7.0 13/8-8UN 31.75M5 4.2 M10×0.75 9.2 134.921/2-8UNM6 5.0 M10×1 9.0 138.10M8 6.8 M12×1 11.0 15/8-8UN3/4-8UN 41.28M10 8.5 M12×1.25 10.7 17/8-8UN44.45M12 10.2 M14×1 13.0 1M14 12.0 M14×1.5 12.5 2-8UN 47.6250.80M16 14.0 M16×1 15.0 21/8-8UN1/4-8UN 53.98M18 15.5 M16×1.5 14.5 260.321/2-8UNM20 17.5 M18×1 17.0 23/4-8UN 66.68M22 19.5 M18×1.5 16.5 2M24 21.0 M20×1 19.0 3-8UN 73.021/4-8UN 79.38M27 24.0 M20×1.5 18.5 385.721/2-8UNM30 26.5 M22×1 21 33/4-8UN 92.08M33 29.5 M22×1.5 20.5 3M36 32.0 M24×1.5 22.5 4-8UN 98.42104.781/4-8UNM39 35.0 M24×2 22.0 4111.12 M42 37.5 M27×1 26.0 41/2-8UN3/4-8UN 117.48M45 40.5 M27×1.5 25.5 4M48 43.0 M27×2 25.0 5-8UN 123.82 M52 47.0 M30×1.5 28.5 51/4-8UN 130.181/2-8UN136.52 M56 50.5 M30×2 28.0 53/4-8UN 142.88M60 54.5 M33×1.5 31.5 5M64 58.0 M33×2 31.0 6-8UN 149.22 M72 66.0 M36×1.5 34.5 M80 74.0 M36×2 34.0M90 84.0 M36×3 33.0M100 94.0 M39×1.5 37.5M39×2 37.0M39×3 36.0M42×1.5 40.5M42×2 40.0M42×3 39.0普通细牙螺纹（公制）(续) M45×2 43.0公称直径钻头直径（mm）M45×3 42.0M56×4 52.0 M48×2 46.0M76×4 72.0 M48×3 45.0M90×4 86.0 M52×2 50.0M100×4 96.0 M52×3 49.0常用螺纹攻丝前用钻头直径速查表：（续）UNC粗牙螺纹 GH螺纹公称直径钻头直径（mm）公称直径底孔直径（mm）粗铰工装号精铰工装号3/4 15.90N04-40UNC 2.2 GHN05-40UNC 2.5 GH7/8 19.101 22.30 2332-433 2332-434 N06-32UNC 2.7 GHN08-32UNC 3.4 GH 1 1/4 28.65 2332-437 2332-438N10-24UNC 3.7 GH 1 3/8 31.83 2332-447 2332-448N12-24UNC 4.4 GH 1 1/2 35.00 2332-3991/4-20UNC 5.1 GH 1 5/8 38.185/16-18UNC 6.5 GH 1 3/4 41.35 2332-445 2332-4462 47.70 2332-451 2332-452 3/8-16UNC 8.0 GH1/2-13UNC 10.7 GH 2 1/4 54.05 2332-436 2332-4355/8-11UNC 13.5 GH 2 1/2 60.40 2332-443 2332-4443/4-10UNC 16.5 GH 2 3/4 66.757/8-9UNC 19.5 GH1-8UNC 22.0 GH 3 1/4 79.451 1/8-7UNC 25 GH 3 1/2 85.801 1/4-7UNC 28.0 GH 3 3/4 92.151 3/8-6UNC 30.5 GH 4 98.51 1/2-6UNC 34.0 GH 4 1/4 104.851 3/4-5UNC 39.0 GH 4 1/2 111.202-4.5UNC 45.0 GH 4 3/4 117.552 1/4-4.5UNC 51.5 GH 5 123.902 1/2-4UNC 57.0 GH 5 1/4 130.252 3/4-4UNC 63.5 GH 5 1/2 136.603-4UNC 70.0 GH 5 3/4 142.956 149.304-4UNC 95.0 GH常用管螺纹钻底孔用钻头直径速查表：55°圆锥管螺纹(Rc) 60°圆锥管螺纹(NPT) 圆柱管螺纹(G)公称直径钻头直径（mm）公称直径钻头直径（mm）公称直径钻头直径（mm）8.9 1/8 8.6 1/8 8.6 1/811.8 1/4 11.5 1/4 11.1 1/415.25 3/8 15 3/8 14.5 3/8191/2 18.5 1/2 18 1/23/4 24 3/4 23.253/4 24.5铰刀2334-2081 30.51 30.25.铰刀2334-2241 1/4 39.51 1/4 39 1 1/4 38铰刀2334-2231 1/2 45 1 1/2 44 1 1/2 451 3/4 512 56.5 2 56铰刀2334-2142 1/2 72.2 2 1/2 66（需铰孔） 2 573 85 3 82.52 1/2 72铰刀2334-21795.5（需铰孔） 3 851/24 110 34 108（需铰孔） 4 1105 135.56 161 5 133.5（需铰孔）5 135.56 159（需铰孔） 6 161 注：1、55°圆锥管螺纹Rc原标准为ZG，底孔需铰，底孔铰刀标准为DB6.21.51-94，底孔塞规标准为DB6.22.5-94，包括1/8至2 1/2规格的铰刀塞规。
螺纹螺距及底孔查询表
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。
常用螺纹与底孔加工对照表
英制管
M6.0×0.5 M7.0×0.75 M7.0×0.5 M8.0×1.0 M8.0×0.75 M8.0×0.5 M9.0×1.0 M9.0×0.75 M10×1.25 M10×1.0 M10×0.75 M10×0.5 M11×1.0 M11×0.75 M12×1.5 M12×1.25 M12×1.0 M12×0.5 M14×1.5 M14×1.0 M15×1.5 M15×1.0 M16×1.5 M16×1.0 M17×1.5 M17×1.0 M18×2.0 M18×1.5 M18×1.0 M20×2.0 M20×1.5 M20×1.0 M22×2.0 M22×1.5 M22×1.0 M24×2.0 M24×1.5 M24×1.0 M25×2.0 M25×1.5 M25×1.0 M26×1.5 M27×2.0 M27×1.5 M27×1.0 M28×2.0
英制管螺纹 PS规格 标准径 (新规格Rp) 1/16-28 6.5 1/8-28 8.5 1/4-19 11.4 3/8-19 14.9 1/2-14 18.6 3/4-14 24.0 1-11 30.2 1 1/4-11 38.8 1 1/2-11 44.7 2-11 56.5 PF规格 标准径 (新规格G) 1/16-28 6.7 1/8-28 8.7 1/4-19 11.7 3/8-19 15.2 1/2-14 19.0 5/8-14 21.0 3/4-14 24.5 7/8-14 28.2 1-11 30.6 1 1/8-11 35.2 1 1/4-11 39.2 1 1/2-11 45.0 1 3/4-11 51.0 2-11 57.0 最大 6.632 8.637 11.549 15.054 18.773 24.259 30.472 39.133 45.026 56.837 最大 6.843 8.848 11.890 15.395 19.172 21.128 24.658 28.418 30.931 35.579 39.592 45.485 51.428 57.296 最小 6.490 8.495 11.341 14.846 18.489 23.975 30.110 38.771 44.664 56.475 最小 6.561 8.566 11.445 14.950 18.631 20.587 24.117 27.877 30.291 34.939 38.952 44.845 50.788 56.656
螺纹与孔径对照表
螺纹与孔径对照表
螺纹（Thread）和孔径（Aperture）是两个不同的概念，在不同的领域有着不同的定义和用途。
以下是一些常见的螺纹与孔径对照表，但请注意具体的对应关系可能因应用场景和标准的不同而有所差异。
1. 螺纹与内孔：
- M2.5：2.5mm 孔径
- M3：3.0mm 孔径
- M4：4.0mm 孔径
- M5：5.0mm 孔径
- M6：6.0mm 孔径
- M8：8.0mm 孔径
- M10：10.0mm 孔径
- M12：12.0mm 孔径
- M14：14.0mm 孔径
- M16：16.0mm 孔径
- M20：20.0mm 孔径
2. 螺纹与外径：
- 1/4-20：1/4 英寸外径，20 TPI（每英寸的螺纹数）
- 3/8-16：3/8 英寸外径，16 TPI
- 1/2-13：1/2 英寸外径，13 TPI
- 5/8-11：5/8 英寸外径，11 TPI
- 3/4-10：3/4 英寸外径，10 TPI
- 1-8：1 英寸外径，8 TPI
- 1 1/4-7：1 1/4 英寸外径，7 TPI
- 1 1/2-6：1 1/2 英寸外径，6 TPI
- 2-4 1/2：2 英寸外径，4 1/2 TPI
- 2 1/2-4：2 1/2 英寸外径，4 TPI
- 3-3 1/2：3 英寸外径，3 1/2 TPI
这只是一个示例表格，实际应用中具体的对照关系可能会有所不同。
还请根据具体情境和标准进行确认。
最全的螺纹孔径对照表(公制-英制)
公制粗螺纹
规格
M1.0*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*0.4 M2.2*0.45 M2.3*0.4 M2.5*0.45 M2.6*0.45 M3.0*0.5 M3.0*0.6 M3.5*0.6 M4.0*0.7 M4.0*0.75 M4.5*0.75 M5.0*0.8 M5.0*0.9 M6.0*1.0 M7.0*1.0 M8.0*1.25 M9.0*1.25 M10*1.5 M11*1.5 M12*1.75 M14*2.0 M16*2.0 M18*2.5 M20*2.5 M22*2.5 M24*3.0 M27*3.0 M30*3.5
2级牙钻孔径 最大 最小 11.153 10.917 11.520 11.400 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 21.153 20.917 22.210 21.835 22.676 22.376 23.153 22.917 23.210 22.835 23.676 23.376 24.153 23.917 24.676 24.376 25.210 24.835 25.676 25.376 26.153 25.917 26.210 25.835 26.676 26.376 27.153 26.917 27.252 26.752 28.210 27.835 28.676 28.376 29.153 28.917 30.210 29.835 30.676 30.376 30.252 29.752 31.210 30.835 31.676 31.376 33.676 33.376 33.252 32.752 34.210 33.835 34.676 34.376
超全螺纹攻牙钻孔直径和滚造直径对照表,值得收藏!
M17×1.0
16.00
16.153
15.917
M18×2.0
16.00
16.210
15.835
M18×1.5
16.50
16.670
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
39.50
39.827
38.964
2 -4-1/2
45.20
45.593
44.679
英制螺纹
规格
钻孔径
硬材
软材
W1/8 - 40
2.65
2.60
W5/32 - 32
3.25
3.20
W3/16 - 24
3.75
3.70
W1/4 - 20
11.938
11.709
9/16 -28
13.20
13.386
13.132
5/8 -24
14.80
14.986
14.732
3/4 -20
17.80
17.958
17.678
7/8 -20
21.00
21.133
20.853
1 -20
24.00
24.308
24.028
美 制 粗 螺 纹
规格(UNC)
标准径
1.40
1.421
1.383
M1.7×0.2
1.45
1.500
1.460
M1.8×0.2
1.60
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。
最全的螺纹孔径对照表(公制-英制)
美制粗螺纹
规格
(UNC)
(螺丝牙外
径)
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.102N4o(.41.28-26) 24(5.486) 1/4 - 20
公制细螺纹
规格
M12*1.0 M12*0.5 M14*1.5 M14*1.0 M15*1.5 M15*1.0 M16*1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 M22*2.0 M22*1.5 M22*1.0 M24*2.0 M24*1.5 M24*1.0 M25*2.0 M25*1.5 M25*1.0 M26*1.5 M27*2.0 M27*1.5 M27*1.0 M28*2.0 M28*1.5 M28*1.0 M30*3.0 M30*2.0 M30*1.5 M30*1.0 M32*2.0 M32*1.5 M33*3.0 M33*2.0 M33*1.5 M35*1.5 M36*3.0 M36*2.0 M36*1.5
标准径
11.00 11.50 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 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
螺纹攻牙底孔对照表
32 / /
35 / /
37.5 / /
40.5 / /
43
表2 英制螺纹攻牙底孔对照表 螺纹规格 底孔孔径 N0.1-81 1.55 N0.2-56 1.8 N0.3-48 2.1
N0.03-56 2.1
N0.4-40 2.3
第2页，共3页
螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径
N0.10-32 3.8
3/16-14 9.4 .7/8-9 19.5 .13/4-5 39.5
3、质量检验
1、产品加工内螺纹时，应分清楚：加工后是否需要进行电镀处理。 2、镀前用相应规格“6Ｇ”的螺纹塞规进行检验，保证通规通，止规止的要求。 3、镀后用相应规格“6Ｈ”的螺纹塞规进行检验，保证通规通，止规止的要求。
N0.5-40 2.6 N0.12-24 4.5 1/2.-13 10.8 .11/8-7 25
N0.6-32 2.8 .1/4-20 5.1 .6/16-12 12.2 .11/4-7 28.2
N0.8-32 3.4 5/16-18 6.6 .5/8-11 13.5 .13/8-6 30.8
N0.10-24 3.8 3./8-16 8.2 .3/4-10 16.5 .11/2-6 34
1、适用范围
本规范适用于公所有产品内螺纹的加工及检测。
2、加工要求
1、内螺纹分公制内螺纹与英制内螺纹。 2、内螺纹的攻牙底孔，见表1、表2。 表1 公制螺纹攻牙底孔对照表 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 M1× 0.25 0.75 M1.7× 0.35 1.35 M2.5× 0.45 2.1 M4× 0.7 3.3 M6× 1 5 M11× 1.5 9.5 M20× 2.5 17.5 M33× 3.5 M1.1× 0.25 0.85 M1.8× 0.35 1.45 M2.6× 0.45 2.2 M4× 0.75 3.25 M7× 1 6 M12× 1.75 10.3 M22× 2.5 19.5 M36× 4 M1.2× 0.25 0.95 M2× 0.4 1.6 M3× 0.5 2.5 M4.5× 0.75 3.8 M8× 1.25 6.8 M14× 2 12 M24× 3 21 M39× 4 M1.4× 0.3 1.1 M2.2× 0.4 1.75 M3× 0.6 2.4 M5× 0.8 4.2 M9× 1.25 7.8 M16× 2 14 M27× 3 24 M42× 4.5 M1.6× 0.35 1.25 M2.3× 0.4 1.9 M3.5× 0.6 2.9 M5× 0.9 4.1 M10× 1.5 8.5 M18× 2.5 15.5 M30× 3.5 26.5 M45× 4.5
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最全面的螺纹加工底孔径对照表
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
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
公制细螺纹
美制细螺纹
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G 英制圆柱管螺纹（55°）加工一览表小径：d1=d-1.2807t
ZG 英制锥管螺纹（55°）加工一览表
小径：d1=d-1.2807t
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°）
小径：d1=d-1.6t
美制螺纹（UNC、UNF）参数表（60°）小径：
1
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：
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）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
英制锥管螺纹和英制锥螺纹攻丝前钻底孔的钻头直径
螺纹底孔明细
英制平行管用螺纹（G、PF）
60°圆锥管螺纹底孔
mm
圆柱管螺纹底孔
mm。